21132180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:238

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 48581100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 37, 38, 45, 57, 60, 74, 76, 90, 95, 111, 114, 148, 167, 171, 180, 185, 190, 222, 228, 285, 333, 334, 342, 370, 380, 444, 501, 555, 570, 666, 668, 684, 703, 740, 835, 855, 1002, 1110, 1140, 1332, 1406, 1503, 1665, 1670, 1710, 2004, 2109, 2220, 2505, 2812, 3006, 3173, 3330, 3340, 3420, 3515, 4218, 5010, 6012, 6179, 6327, 6346, 6660, 7030, 7515, 8436, 9519, 10020, 10545, 12358, 12654, 12692, 14060, 15030, 15865, 18537, 19038, 21090, 24716, 25308, 28557, 30060, 30895, 31635, 31730, 37074, 38076, 42180, 47595, 55611, 57114, 61790, 63270, 63460, 74148, 92685, 95190, 111222, 114228, 117401, 123580, 126540, 142785, 185370, 190380, 222444, 234802, 278055, 285570, 352203, 370740, 469604, 556110, 571140, 587005, 704406, 1056609, 1112220, 1174010, 1408812, 1761015, 2113218, 2348020, 3522030, 4226436, 5283045, 7044060, 10566090, 21132180]

約数ペア:

[(1, 21132180), (2, 10566090), (3, 7044060), (4, 5283045), (5, 4226436), (6, 3522030), (9, 2348020), (10, 2113218), (12, 1761015), (15, 1408812), (18, 1174010), (19, 1112220), (20, 1056609), (30, 704406), (36, 587005), (37, 571140), (38, 556110), (45, 469604), (57, 370740), (60, 352203), (74, 285570), (76, 278055), (90, 234802), (95, 222444), (111, 190380), (114, 185370), (148, 142785), (167, 126540), (171, 123580), (180, 117401), (185, 114228), (190, 111222), (222, 95190), (228, 92685), (285, 74148), (333, 63460), (334, 63270), (342, 61790), (370, 57114), (380, 55611), (444, 47595), (501, 42180), (555, 38076), (570, 37074), (666, 31730), (668, 31635), (684, 30895), (703, 30060), (740, 28557), (835, 25308), (855, 24716), (1002, 21090), (1110, 19038), (1140, 18537), (1332, 15865), (1406, 15030), (1503, 14060), (1665, 12692), (1670, 12654), (1710, 12358), (2004, 10545), (2109, 10020), (2220, 9519), (2505, 8436), (2812, 7515), (3006, 7030), (3173, 6660), (3330, 6346), (3340, 6327), (3420, 6179), (3515, 6012), (4218, 5010)]