128173840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{51683}}^1$

素因数の和:51727

約数の個数: 40

約数和(自身を含む): 307623168

約数和(自身を除く): 179449328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 51683, 103366, 206732, 258415, 413464, 516830, 826928, 1033660, 1602173, 2067320, 3204346, 4134640, 6408692, 8010865, 12817384, 16021730, 25634768, 32043460, 64086920, 128173840]

約数ペア:

[(1, 128173840), (2, 64086920), (4, 32043460), (5, 25634768), (8, 16021730), (10, 12817384), (16, 8010865), (20, 6408692), (31, 4134640), (40, 3204346), (62, 2067320), (80, 1602173), (124, 1033660), (155, 826928), (248, 516830), (310, 413464), (496, 258415), (620, 206732), (1240, 103366), (2480, 51683)]