21870330

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 128

約数和(自身を含む): 61067520

約数和(自身を除く): 39197190

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 19, 30, 34, 37, 38, 51, 57, 61, 74, 85, 95, 102, 111, 114, 122, 170, 183, 185, 190, 222, 255, 285, 305, 323, 366, 370, 510, 555, 570, 610, 629, 646, 703, 915, 969, 1037, 1110, 1159, 1258, 1406, 1615, 1830, 1887, 1938, 2074, 2109, 2257, 2318, 3111, 3145, 3230, 3477, 3515, 3774, 4218, 4514, 4845, 5185, 5795, 6222, 6290, 6771, 6954, 7030, 9435, 9690, 10370, 10545, 11285, 11590, 11951, 13542, 15555, 17385, 18870, 19703, 21090, 22570, 23902, 31110, 33855, 34770, 35853, 38369, 39406, 42883, 59109, 59755, 67710, 71706, 76738, 85766, 98515, 115107, 118218, 119510, 128649, 179265, 191845, 197030, 214415, 230214, 257298, 295545, 358530, 383690, 428830, 575535, 591090, 643245, 729011, 1151070, 1286490, 1458022, 2187033, 3645055, 4374066, 7290110, 10935165, 21870330]

約数ペア:

[(1, 21870330), (2, 10935165), (3, 7290110), (5, 4374066), (6, 3645055), (10, 2187033), (15, 1458022), (17, 1286490), (19, 1151070), (30, 729011), (34, 643245), (37, 591090), (38, 575535), (51, 428830), (57, 383690), (61, 358530), (74, 295545), (85, 257298), (95, 230214), (102, 214415), (111, 197030), (114, 191845), (122, 179265), (170, 128649), (183, 119510), (185, 118218), (190, 115107), (222, 98515), (255, 85766), (285, 76738), (305, 71706), (323, 67710), (366, 59755), (370, 59109), (510, 42883), (555, 39406), (570, 38369), (610, 35853), (629, 34770), (646, 33855), (703, 31110), (915, 23902), (969, 22570), (1037, 21090), (1110, 19703), (1159, 18870), (1258, 17385), (1406, 15555), (1615, 13542), (1830, 11951), (1887, 11590), (1938, 11285), (2074, 10545), (2109, 10370), (2257, 9690), (2318, 9435), (3111, 7030), (3145, 6954), (3230, 6771), (3477, 6290), (3515, 6222), (3774, 5795), (4218, 5185), (4514, 4845)]