28148620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{547}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 61867008

約数和(自身を除く): 33718388

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 83, 124, 155, 166, 310, 332, 415, 547, 620, 830, 1094, 1660, 2188, 2573, 2735, 5146, 5470, 10292, 10940, 12865, 16957, 25730, 33914, 45401, 51460, 67828, 84785, 90802, 169570, 181604, 227005, 339140, 454010, 908020, 1407431, 2814862, 5629724, 7037155, 14074310, 28148620]

約数ペア:

[(1, 28148620), (2, 14074310), (4, 7037155), (5, 5629724), (10, 2814862), (20, 1407431), (31, 908020), (62, 454010), (83, 339140), (124, 227005), (155, 181604), (166, 169570), (310, 90802), (332, 84785), (415, 67828), (547, 51460), (620, 45401), (830, 33914), (1094, 25730), (1660, 16957), (2188, 12865), (2573, 10940), (2735, 10292), (5146, 5470)]