209520320

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21121}}^1$

素因数の和:21169

約数の個数: 56

約数和(自身を含む): 515038848

約数和(自身を除く): 305518528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 21121, 42242, 84484, 105605, 168968, 211210, 337936, 422420, 654751, 675872, 844840, 1309502, 1351744, 1689680, 2619004, 3273755, 3379360, 5238008, 6547510, 6758720, 10476016, 13095020, 20952032, 26190040, 41904064, 52380080, 104760160, 209520320]

約数ペア:

[(1, 209520320), (2, 104760160), (4, 52380080), (5, 41904064), (8, 26190040), (10, 20952032), (16, 13095020), (20, 10476016), (31, 6758720), (32, 6547510), (40, 5238008), (62, 3379360), (64, 3273755), (80, 2619004), (124, 1689680), (155, 1351744), (160, 1309502), (248, 844840), (310, 675872), (320, 654751), (496, 422420), (620, 337936), (992, 211210), (1240, 168968), (1984, 105605), (2480, 84484), (4960, 42242), (9920, 21121)]