21854037760

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{550757}}^1$

素因数の和:550809

約数の個数: 72

約数和(自身を含む): 54035968896

約数和(自身を除く): 32181931136

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, 39680, 550757, 1101514, 2203028, 2753785, 4406056, 5507570, 8812112, 11015140, 17073467, 17624224, 22030280, 34146934, 35248448, 44060560, 68293868, 70496896, 85367335, 88121120, 136587736, 140993792, 170734670, 176242240, 273175472, 341469340, 352484480, 546350944, 682938680, 704968960, 1092701888, 1365877360, 2185403776, 2731754720, 4370807552, 5463509440, 10927018880, 21854037760]

約数ペア:

[(1, 21854037760), (2, 10927018880), (4, 5463509440), (5, 4370807552), (8, 2731754720), (10, 2185403776), (16, 1365877360), (20, 1092701888), (31, 704968960), (32, 682938680), (40, 546350944), (62, 352484480), (64, 341469340), (80, 273175472), (124, 176242240), (128, 170734670), (155, 140993792), (160, 136587736), (248, 88121120), (256, 85367335), (310, 70496896), (320, 68293868), (496, 44060560), (620, 35248448), (640, 34146934), (992, 22030280), (1240, 17624224), (1280, 17073467), (1984, 11015140), (2480, 8812112), (3968, 5507570), (4960, 4406056), (7936, 2753785), (9920, 2203028), (19840, 1101514), (39680, 550757)]