398655720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{349}}^1$

素因数の和:552

約数の個数: 192

約数和(自身を含む): 1375920000

約数和(自身を除く): 977264280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 167, 171, 180, 190, 228, 285, 334, 342, 349, 360, 380, 456, 501, 570, 668, 684, 698, 760, 835, 855, 1002, 1047, 1140, 1336, 1368, 1396, 1503, 1670, 1710, 1745, 2004, 2094, 2280, 2505, 2792, 3006, 3141, 3173, 3340, 3420, 3490, 4008, 4188, 5010, 5235, 6012, 6282, 6346, 6631, 6680, 6840, 6980, 7515, 8376, 9519, 10020, 10470, 12024, 12564, 12692, 13262, 13960, 15030, 15705, 15865, 19038, 19893, 20040, 20940, 25128, 25384, 26524, 28557, 30060, 31410, 31730, 33155, 38076, 39786, 41880, 47595, 53048, 57114, 58283, 59679, 60120, 62820, 63460, 66310, 76152, 79572, 95190, 99465, 114228, 116566, 119358, 125640, 126920, 132620, 142785, 159144, 174849, 190380, 198930, 228456, 233132, 238716, 265240, 285570, 291415, 298395, 349698, 380760, 397860, 466264, 477432, 524547, 571140, 582830, 596790, 699396, 795720, 874245, 1049094, 1107377, 1142280, 1165660, 1193580, 1398792, 1748490, 2098188, 2214754, 2331320, 2387160, 2622735, 3322131, 3496980, 4196376, 4429508, 5245470, 5536885, 6644262, 6993960, 8859016, 9966393, 10490940, 11073770, 13288524, 16610655, 19932786, 20981880, 22147540, 26577048, 33221310, 39865572, 44295080, 49831965, 66442620, 79731144, 99663930, 132885240, 199327860, 398655720]

約数ペア:

[(1, 398655720), (2, 199327860), (3, 132885240), (4, 99663930), (5, 79731144), (6, 66442620), (8, 49831965), (9, 44295080), (10, 39865572), (12, 33221310), (15, 26577048), (18, 22147540), (19, 20981880), (20, 19932786), (24, 16610655), (30, 13288524), (36, 11073770), (38, 10490940), (40, 9966393), (45, 8859016), (57, 6993960), (60, 6644262), (72, 5536885), (76, 5245470), (90, 4429508), (95, 4196376), (114, 3496980), (120, 3322131), (152, 2622735), (167, 2387160), (171, 2331320), (180, 2214754), (190, 2098188), (228, 1748490), (285, 1398792), (334, 1193580), (342, 1165660), (349, 1142280), (360, 1107377), (380, 1049094), (456, 874245), (501, 795720), (570, 699396), (668, 596790), (684, 582830), (698, 571140), (760, 524547), (835, 477432), (855, 466264), (1002, 397860), (1047, 380760), (1140, 349698), (1336, 298395), (1368, 291415), (1396, 285570), (1503, 265240), (1670, 238716), (1710, 233132), (1745, 228456), (2004, 198930), (2094, 190380), (2280, 174849), (2505, 159144), (2792, 142785), (3006, 132620), (3141, 126920), (3173, 125640), (3340, 119358), (3420, 116566), (3490, 114228), (4008, 99465), (4188, 95190), (5010, 79572), (5235, 76152), (6012, 66310), (6282, 63460), (6346, 62820), (6631, 60120), (6680, 59679), (6840, 58283), (6980, 57114), (7515, 53048), (8376, 47595), (9519, 41880), (10020, 39786), (10470, 38076), (12024, 33155), (12564, 31730), (12692, 31410), (13262, 30060), (13960, 28557), (15030, 26524), (15705, 25384), (15865, 25128), (19038, 20940), (19893, 20040)]