21580164

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{389}}^1$

素因数の和:489

約数の個数: 72

約数和(自身を含む): 57919680

約数和(自身を除く): 36339516

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 67, 69, 92, 134, 138, 201, 207, 268, 276, 389, 402, 414, 603, 778, 804, 828, 1167, 1206, 1541, 1556, 2334, 2412, 3082, 3501, 4623, 4668, 6164, 7002, 8947, 9246, 13869, 14004, 17894, 18492, 26063, 26841, 27738, 35788, 52126, 53682, 55476, 78189, 80523, 104252, 107364, 156378, 161046, 234567, 312756, 322092, 469134, 599449, 938268, 1198898, 1798347, 2397796, 3596694, 5395041, 7193388, 10790082, 21580164]

約数ペア:

[(1, 21580164), (2, 10790082), (3, 7193388), (4, 5395041), (6, 3596694), (9, 2397796), (12, 1798347), (18, 1198898), (23, 938268), (36, 599449), (46, 469134), (67, 322092), (69, 312756), (92, 234567), (134, 161046), (138, 156378), (201, 107364), (207, 104252), (268, 80523), (276, 78189), (389, 55476), (402, 53682), (414, 52126), (603, 35788), (778, 27738), (804, 26841), (828, 26063), (1167, 18492), (1206, 17894), (1541, 14004), (1556, 13869), (2334, 9246), (2412, 8947), (3082, 7002), (3501, 6164), (4623, 4668)]