821886920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1\times {\mathrm{997}}^1$

素因数の和:1602

約数の個数: 64

約数和(自身を含む): 1904543280

約数和(自身を除く): 1082656360

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 557, 740, 997, 1114, 1480, 1994, 2228, 2785, 3988, 4456, 4985, 5570, 7976, 9970, 11140, 19940, 20609, 22280, 36889, 39880, 41218, 73778, 82436, 103045, 147556, 164872, 184445, 206090, 295112, 368890, 412180, 555329, 737780, 824360, 1110658, 1475560, 2221316, 2776645, 4442632, 5553290, 11106580, 20547173, 22213160, 41094346, 82188692, 102735865, 164377384, 205471730, 410943460, 821886920]

約数ペア:

[(1, 821886920), (2, 410943460), (4, 205471730), (5, 164377384), (8, 102735865), (10, 82188692), (20, 41094346), (37, 22213160), (40, 20547173), (74, 11106580), (148, 5553290), (185, 4442632), (296, 2776645), (370, 2221316), (557, 1475560), (740, 1110658), (997, 824360), (1114, 737780), (1480, 555329), (1994, 412180), (2228, 368890), (2785, 295112), (3988, 206090), (4456, 184445), (4985, 164872), (5570, 147556), (7976, 103045), (9970, 82436), (11140, 73778), (19940, 41218), (20609, 39880), (22280, 36889)]