128535920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{51829}}^1$

素因数の和:51873

約数の個数: 40

約数和(自身を含む): 308492160

約数和(自身を除く): 179956240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 51829, 103658, 207316, 259145, 414632, 518290, 829264, 1036580, 1606699, 2073160, 3213398, 4146320, 6426796, 8033495, 12853592, 16066990, 25707184, 32133980, 64267960, 128535920]

約数ペア:

[(1, 128535920), (2, 64267960), (4, 32133980), (5, 25707184), (8, 16066990), (10, 12853592), (16, 8033495), (20, 6426796), (31, 4146320), (40, 3213398), (62, 2073160), (80, 1606699), (124, 1036580), (155, 829264), (248, 518290), (310, 414632), (496, 259145), (620, 207316), (1240, 103658), (2480, 51829)]