278360420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{12899}}^1$

素因数の和:13004

約数の個数: 48

約数和(自身を含む): 637156800

約数和(自身を除く): 358796380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 83, 130, 166, 260, 332, 415, 830, 1079, 1660, 2158, 4316, 5395, 10790, 12899, 21580, 25798, 51596, 64495, 128990, 167687, 257980, 335374, 670748, 838435, 1070617, 1676870, 2141234, 3353740, 4282468, 5353085, 10706170, 13918021, 21412340, 27836042, 55672084, 69590105, 139180210, 278360420]

約数ペア:

[(1, 278360420), (2, 139180210), (4, 69590105), (5, 55672084), (10, 27836042), (13, 21412340), (20, 13918021), (26, 10706170), (52, 5353085), (65, 4282468), (83, 3353740), (130, 2141234), (166, 1676870), (260, 1070617), (332, 838435), (415, 670748), (830, 335374), (1079, 257980), (1660, 167687), (2158, 128990), (4316, 64495), (5395, 51596), (10790, 25798), (12899, 21580)]