2978131760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{907967}}^1$

素因数の和:908021

約数の個数: 40

約数和(自身を含む): 7093046016

約数和(自身を除く): 4114914256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 907967, 1815934, 3631868, 4539835, 7263736, 9079670, 14527472, 18159340, 36318680, 37226647, 72637360, 74453294, 148906588, 186133235, 297813176, 372266470, 595626352, 744532940, 1489065880, 2978131760]

約数ペア:

[(1, 2978131760), (2, 1489065880), (4, 744532940), (5, 595626352), (8, 372266470), (10, 297813176), (16, 186133235), (20, 148906588), (40, 74453294), (41, 72637360), (80, 37226647), (82, 36318680), (164, 18159340), (205, 14527472), (328, 9079670), (410, 7263736), (656, 4539835), (820, 3631868), (1640, 1815934), (3280, 907967)]