128994400

素因数分解:

$2^5\times 5^2\times {\mathrm{383}}^1\times {\mathrm{421}}^1$

素因数の和:824

約数の個数: 72

約数和(自身を含む): 316479744

約数和(自身を除く): 187485344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 383, 400, 421, 766, 800, 842, 1532, 1684, 1915, 2105, 3064, 3368, 3830, 4210, 6128, 6736, 7660, 8420, 9575, 10525, 12256, 13472, 15320, 16840, 19150, 21050, 30640, 33680, 38300, 42100, 61280, 67360, 76600, 84200, 153200, 161243, 168400, 306400, 322486, 336800, 644972, 806215, 1289944, 1612430, 2579888, 3224860, 4031075, 5159776, 6449720, 8062150, 12899440, 16124300, 25798880, 32248600, 64497200, 128994400]

約数ペア:

[(1, 128994400), (2, 64497200), (4, 32248600), (5, 25798880), (8, 16124300), (10, 12899440), (16, 8062150), (20, 6449720), (25, 5159776), (32, 4031075), (40, 3224860), (50, 2579888), (80, 1612430), (100, 1289944), (160, 806215), (200, 644972), (383, 336800), (400, 322486), (421, 306400), (766, 168400), (800, 161243), (842, 153200), (1532, 84200), (1684, 76600), (1915, 67360), (2105, 61280), (3064, 42100), (3368, 38300), (3830, 33680), (4210, 30640), (6128, 21050), (6736, 19150), (7660, 16840), (8420, 15320), (9575, 13472), (10525, 12256)]