21302130

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 52939008

約数和(自身を除く): 31636878

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 73, 137, 142, 146, 213, 219, 274, 355, 365, 411, 426, 438, 685, 710, 730, 822, 1065, 1095, 1370, 2055, 2130, 2190, 4110, 5183, 9727, 10001, 10366, 15549, 19454, 20002, 25915, 29181, 30003, 31098, 48635, 50005, 51830, 58362, 60006, 77745, 97270, 100010, 145905, 150015, 155490, 291810, 300030, 710071, 1420142, 2130213, 3550355, 4260426, 7100710, 10651065, 21302130]

約数ペア:

[(1, 21302130), (2, 10651065), (3, 7100710), (5, 4260426), (6, 3550355), (10, 2130213), (15, 1420142), (30, 710071), (71, 300030), (73, 291810), (137, 155490), (142, 150015), (146, 145905), (213, 100010), (219, 97270), (274, 77745), (355, 60006), (365, 58362), (411, 51830), (426, 50005), (438, 48635), (685, 31098), (710, 30003), (730, 29181), (822, 25915), (1065, 20002), (1095, 19454), (1370, 15549), (2055, 10366), (2130, 10001), (2190, 9727), (4110, 5183)]