123719140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 276761016

約数和(自身を除く): 153041876

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 157, 164, 205, 310, 314, 410, 620, 628, 785, 820, 961, 1271, 1570, 1922, 2542, 3140, 3844, 4805, 4867, 5084, 6355, 6437, 9610, 9734, 12710, 12874, 19220, 19468, 24335, 25420, 25748, 32185, 39401, 48670, 64370, 78802, 97340, 128740, 150877, 157604, 197005, 199547, 301754, 394010, 399094, 603508, 754385, 788020, 798188, 997735, 1508770, 1995470, 3017540, 3990940, 6185957, 12371914, 24743828, 30929785, 61859570, 123719140]

約数ペア:

[(1, 123719140), (2, 61859570), (4, 30929785), (5, 24743828), (10, 12371914), (20, 6185957), (31, 3990940), (41, 3017540), (62, 1995470), (82, 1508770), (124, 997735), (155, 798188), (157, 788020), (164, 754385), (205, 603508), (310, 399094), (314, 394010), (410, 301754), (620, 199547), (628, 197005), (785, 157604), (820, 150877), (961, 128740), (1271, 97340), (1570, 78802), (1922, 64370), (2542, 48670), (3140, 39401), (3844, 32185), (4805, 25748), (4867, 25420), (5084, 24335), (6355, 19468), (6437, 19220), (9610, 12874), (9734, 12710)]