257458720

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{51907}}^1$

素因数の和:51953

約数の個数: 48

約数和(自身を含む): 627879168

約数和(自身を除く): 370420448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 51907, 103814, 207628, 259535, 415256, 519070, 830512, 1038140, 1609117, 1661024, 2076280, 3218234, 4152560, 6436468, 8045585, 8305120, 12872936, 16091170, 25745872, 32182340, 51491744, 64364680, 128729360, 257458720]

約数ペア:

[(1, 257458720), (2, 128729360), (4, 64364680), (5, 51491744), (8, 32182340), (10, 25745872), (16, 16091170), (20, 12872936), (31, 8305120), (32, 8045585), (40, 6436468), (62, 4152560), (80, 3218234), (124, 2076280), (155, 1661024), (160, 1609117), (248, 1038140), (310, 830512), (496, 519070), (620, 415256), (992, 259535), (1240, 207628), (2480, 103814), (4960, 51907)]