129904400

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{89}}^2$

素因数の和:237

約数の個数: 90

約数和(自身を含む): 323339982

約数和(自身を除く): 193435582

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 89, 100, 164, 178, 200, 205, 328, 356, 400, 410, 445, 656, 712, 820, 890, 1025, 1424, 1640, 1780, 2050, 2225, 3280, 3560, 3649, 4100, 4450, 7120, 7298, 7921, 8200, 8900, 14596, 15842, 16400, 17800, 18245, 29192, 31684, 35600, 36490, 39605, 58384, 63368, 72980, 79210, 91225, 126736, 145960, 158420, 182450, 198025, 291920, 316840, 324761, 364900, 396050, 633680, 649522, 729800, 792100, 1299044, 1459600, 1584200, 1623805, 2598088, 3168400, 3247610, 5196176, 6495220, 8119025, 12990440, 16238050, 25980880, 32476100, 64952200, 129904400]

約数ペア:

[(1, 129904400), (2, 64952200), (4, 32476100), (5, 25980880), (8, 16238050), (10, 12990440), (16, 8119025), (20, 6495220), (25, 5196176), (40, 3247610), (41, 3168400), (50, 2598088), (80, 1623805), (82, 1584200), (89, 1459600), (100, 1299044), (164, 792100), (178, 729800), (200, 649522), (205, 633680), (328, 396050), (356, 364900), (400, 324761), (410, 316840), (445, 291920), (656, 198025), (712, 182450), (820, 158420), (890, 145960), (1025, 126736), (1424, 91225), (1640, 79210), (1780, 72980), (2050, 63368), (2225, 58384), (3280, 39605), (3560, 36490), (3649, 35600), (4100, 31684), (4450, 29192), (7120, 18245), (7298, 17800), (7921, 16400), (8200, 15842), (8900, 14596)]