21158580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:253

約数の個数: 96

約数和(自身を含む): 62092800

約数和(自身を除く): 40934220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 59, 60, 86, 118, 129, 139, 172, 177, 215, 236, 258, 278, 295, 354, 417, 430, 516, 556, 590, 645, 695, 708, 834, 860, 885, 1180, 1290, 1390, 1668, 1770, 2085, 2537, 2580, 2780, 3540, 4170, 5074, 5977, 7611, 8201, 8340, 10148, 11954, 12685, 15222, 16402, 17931, 23908, 24603, 25370, 29885, 30444, 32804, 35862, 38055, 41005, 49206, 50740, 59770, 71724, 76110, 82010, 89655, 98412, 119540, 123015, 152220, 164020, 179310, 246030, 352643, 358620, 492060, 705286, 1057929, 1410572, 1763215, 2115858, 3526430, 4231716, 5289645, 7052860, 10579290, 21158580]

約数ペア:

[(1, 21158580), (2, 10579290), (3, 7052860), (4, 5289645), (5, 4231716), (6, 3526430), (10, 2115858), (12, 1763215), (15, 1410572), (20, 1057929), (30, 705286), (43, 492060), (59, 358620), (60, 352643), (86, 246030), (118, 179310), (129, 164020), (139, 152220), (172, 123015), (177, 119540), (215, 98412), (236, 89655), (258, 82010), (278, 76110), (295, 71724), (354, 59770), (417, 50740), (430, 49206), (516, 41005), (556, 38055), (590, 35862), (645, 32804), (695, 30444), (708, 29885), (834, 25370), (860, 24603), (885, 23908), (1180, 17931), (1290, 16402), (1390, 15222), (1668, 12685), (1770, 11954), (2085, 10148), (2537, 8340), (2580, 8201), (2780, 7611), (3540, 5977), (4170, 5074)]