16617620

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 36278928

約数和(自身を除く): 19661308

約数列:

[1, 2, 4, 5, 10, 20, 53, 61, 106, 122, 212, 244, 257, 265, 305, 514, 530, 610, 1028, 1060, 1220, 1285, 2570, 3233, 5140, 6466, 12932, 13621, 15677, 16165, 27242, 31354, 32330, 54484, 62708, 64660, 68105, 78385, 136210, 156770, 272420, 313540, 830881, 1661762, 3323524, 4154405, 8308810, 16617620]

約数ペア:

[(1, 16617620), (2, 8308810), (4, 4154405), (5, 3323524), (10, 1661762), (20, 830881), (53, 313540), (61, 272420), (106, 156770), (122, 136210), (212, 78385), (244, 68105), (257, 64660), (265, 62708), (305, 54484), (514, 32330), (530, 31354), (610, 27242), (1028, 16165), (1060, 15677), (1220, 13621), (1285, 12932), (2570, 6466), (3233, 5140)]