251401420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1\times {\mathrm{1151}}^1$

素因数の和:1390

約数の個数: 48

約数和(自身を含む): 539578368

約数和(自身を除く): 288176948

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 163, 268, 326, 335, 652, 670, 815, 1151, 1340, 1630, 2302, 3260, 4604, 5755, 10921, 11510, 21842, 23020, 43684, 54605, 77117, 109210, 154234, 187613, 218420, 308468, 375226, 385585, 750452, 771170, 938065, 1542340, 1876130, 3752260, 12570071, 25140142, 50280284, 62850355, 125700710, 251401420]

約数ペア:

[(1, 251401420), (2, 125700710), (4, 62850355), (5, 50280284), (10, 25140142), (20, 12570071), (67, 3752260), (134, 1876130), (163, 1542340), (268, 938065), (326, 771170), (335, 750452), (652, 385585), (670, 375226), (815, 308468), (1151, 218420), (1340, 187613), (1630, 154234), (2302, 109210), (3260, 77117), (4604, 54605), (5755, 43684), (10921, 23020), (11510, 21842)]