21304260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1667}}^1$

素因数の和:1753

約数の個数: 72

約数和(自身を含む): 65572416

約数和(自身を除く): 44268156

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1667, 2130, 2556, 3195, 3334, 4260, 5001, 6390, 6668, 8335, 10002, 12780, 15003, 16670, 20004, 25005, 30006, 33340, 50010, 60012, 75015, 100020, 118357, 150030, 236714, 300060, 355071, 473428, 591785, 710142, 1065213, 1183570, 1420284, 1775355, 2130426, 2367140, 3550710, 4260852, 5326065, 7101420, 10652130, 21304260]

約数ペア:

[(1, 21304260), (2, 10652130), (3, 7101420), (4, 5326065), (5, 4260852), (6, 3550710), (9, 2367140), (10, 2130426), (12, 1775355), (15, 1420284), (18, 1183570), (20, 1065213), (30, 710142), (36, 591785), (45, 473428), (60, 355071), (71, 300060), (90, 236714), (142, 150030), (180, 118357), (213, 100020), (284, 75015), (355, 60012), (426, 50010), (639, 33340), (710, 30006), (852, 25005), (1065, 20004), (1278, 16670), (1420, 15003), (1667, 12780), (2130, 10002), (2556, 8335), (3195, 6668), (3334, 6390), (4260, 5001)]