291216980

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1\times {\mathrm{1069}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 626104080

約数和(自身を除く): 334887100

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 257, 265, 514, 530, 1028, 1060, 1069, 1285, 2138, 2570, 4276, 5140, 5345, 10690, 13621, 21380, 27242, 54484, 56657, 68105, 113314, 136210, 226628, 272420, 274733, 283285, 549466, 566570, 1098932, 1133140, 1373665, 2747330, 5494660, 14560849, 29121698, 58243396, 72804245, 145608490, 291216980]

約数ペア:

[(1, 291216980), (2, 145608490), (4, 72804245), (5, 58243396), (10, 29121698), (20, 14560849), (53, 5494660), (106, 2747330), (212, 1373665), (257, 1133140), (265, 1098932), (514, 566570), (530, 549466), (1028, 283285), (1060, 274733), (1069, 272420), (1285, 226628), (2138, 136210), (2570, 113314), (4276, 68105), (5140, 56657), (5345, 54484), (10690, 27242), (13621, 21380)]