64688320

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6521}}^1$

素因数の和:6569

約数の個数: 56

約数和(自身を含む): 159032448

約数和(自身を除く): 94344128

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, 6521, 9920, 13042, 26084, 32605, 52168, 65210, 104336, 130420, 202151, 208672, 260840, 404302, 417344, 521680, 808604, 1010755, 1043360, 1617208, 2021510, 2086720, 3234416, 4043020, 6468832, 8086040, 12937664, 16172080, 32344160, 64688320]

約数ペア:

[(1, 64688320), (2, 32344160), (4, 16172080), (5, 12937664), (8, 8086040), (10, 6468832), (16, 4043020), (20, 3234416), (31, 2086720), (32, 2021510), (40, 1617208), (62, 1043360), (64, 1010755), (80, 808604), (124, 521680), (155, 417344), (160, 404302), (248, 260840), (310, 208672), (320, 202151), (496, 130420), (620, 104336), (992, 65210), (1240, 52168), (1984, 32605), (2480, 26084), (4960, 13042), (6521, 9920)]