72491980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 173859840

約数和(自身を除く): 101367860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 79, 86, 97, 110, 158, 172, 194, 215, 220, 316, 388, 395, 430, 473, 485, 790, 860, 869, 946, 970, 1067, 1580, 1738, 1892, 1940, 2134, 2365, 3397, 3476, 4171, 4268, 4345, 4730, 5335, 6794, 7663, 8342, 8690, 9460, 10670, 13588, 15326, 16684, 16985, 17380, 20855, 21340, 30652, 33970, 37367, 38315, 41710, 45881, 67940, 74734, 76630, 83420, 84293, 91762, 149468, 153260, 168586, 183524, 186835, 229405, 329509, 337172, 373670, 421465, 458810, 659018, 747340, 842930, 917620, 1318036, 1647545, 1685860, 3295090, 3624599, 6590180, 7249198, 14498396, 18122995, 36245990, 72491980]

約数ペア:

[(1, 72491980), (2, 36245990), (4, 18122995), (5, 14498396), (10, 7249198), (11, 6590180), (20, 3624599), (22, 3295090), (43, 1685860), (44, 1647545), (55, 1318036), (79, 917620), (86, 842930), (97, 747340), (110, 659018), (158, 458810), (172, 421465), (194, 373670), (215, 337172), (220, 329509), (316, 229405), (388, 186835), (395, 183524), (430, 168586), (473, 153260), (485, 149468), (790, 91762), (860, 84293), (869, 83420), (946, 76630), (970, 74734), (1067, 67940), (1580, 45881), (1738, 41710), (1892, 38315), (1940, 37367), (2134, 33970), (2365, 30652), (3397, 21340), (3476, 20855), (4171, 17380), (4268, 16985), (4345, 16684), (4730, 15326), (5335, 13588), (6794, 10670), (7663, 9460), (8342, 8690)]