1281544960

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32297}}^1$

素因数の和:32349

約数の個数: 72

約数和(自身を含む): 3168821376

約数和(自身を除く): 1887276416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 32297, 39680, 64594, 129188, 161485, 258376, 322970, 516752, 645940, 1001207, 1033504, 1291880, 2002414, 2067008, 2583760, 4004828, 4134016, 5006035, 5167520, 8009656, 8268032, 10012070, 10335040, 16019312, 20024140, 20670080, 32038624, 40048280, 41340160, 64077248, 80096560, 128154496, 160193120, 256308992, 320386240, 640772480, 1281544960]

約数ペア:

[(1, 1281544960), (2, 640772480), (4, 320386240), (5, 256308992), (8, 160193120), (10, 128154496), (16, 80096560), (20, 64077248), (31, 41340160), (32, 40048280), (40, 32038624), (62, 20670080), (64, 20024140), (80, 16019312), (124, 10335040), (128, 10012070), (155, 8268032), (160, 8009656), (248, 5167520), (256, 5006035), (310, 4134016), (320, 4004828), (496, 2583760), (620, 2067008), (640, 2002414), (992, 1291880), (1240, 1033504), (1280, 1001207), (1984, 645940), (2480, 516752), (3968, 322970), (4960, 258376), (7936, 161485), (9920, 129188), (19840, 64594), (32297, 39680)]