128415420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{101917}}^1$

素因数の和:101939

約数の個数: 72

約数和(自身を含む): 445177824

約数和(自身を除く): 316762404

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 101917, 203834, 305751, 407668, 509585, 611502, 713419, 917253, 1019170, 1223004, 1426838, 1528755, 1834506, 2038340, 2140257, 2853676, 3057510, 3567095, 3669012, 4280514, 4586265, 6115020, 6420771, 7134190, 8561028, 9172530, 10701285, 12841542, 14268380, 18345060, 21402570, 25683084, 32103855, 42805140, 64207710, 128415420]

約数ペア:

[(1, 128415420), (2, 64207710), (3, 42805140), (4, 32103855), (5, 25683084), (6, 21402570), (7, 18345060), (9, 14268380), (10, 12841542), (12, 10701285), (14, 9172530), (15, 8561028), (18, 7134190), (20, 6420771), (21, 6115020), (28, 4586265), (30, 4280514), (35, 3669012), (36, 3567095), (42, 3057510), (45, 2853676), (60, 2140257), (63, 2038340), (70, 1834506), (84, 1528755), (90, 1426838), (105, 1223004), (126, 1019170), (140, 917253), (180, 713419), (210, 611502), (252, 509585), (315, 407668), (420, 305751), (630, 203834), (1260, 101917)]