80172640

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^2\times {\mathrm{271}}^1$

素因数の和:372

約数の個数: 72

約数和(自身を含む): 194630688

約数和(自身を除く): 114458048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 271, 344, 430, 542, 688, 860, 1084, 1355, 1376, 1720, 1849, 2168, 2710, 3440, 3698, 4336, 5420, 6880, 7396, 8672, 9245, 10840, 11653, 14792, 18490, 21680, 23306, 29584, 36980, 43360, 46612, 58265, 59168, 73960, 93224, 116530, 147920, 186448, 233060, 295840, 372896, 466120, 501079, 932240, 1002158, 1864480, 2004316, 2505395, 4008632, 5010790, 8017264, 10021580, 16034528, 20043160, 40086320, 80172640]

約数ペア:

[(1, 80172640), (2, 40086320), (4, 20043160), (5, 16034528), (8, 10021580), (10, 8017264), (16, 5010790), (20, 4008632), (32, 2505395), (40, 2004316), (43, 1864480), (80, 1002158), (86, 932240), (160, 501079), (172, 466120), (215, 372896), (271, 295840), (344, 233060), (430, 186448), (542, 147920), (688, 116530), (860, 93224), (1084, 73960), (1355, 59168), (1376, 58265), (1720, 46612), (1849, 43360), (2168, 36980), (2710, 29584), (3440, 23306), (3698, 21680), (4336, 18490), (5420, 14792), (6880, 11653), (7396, 10840), (8672, 9245)]