19676320

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3967}}^1$

素因数の和:4013

約数の個数: 48

約数和(自身を含む): 47996928

約数和(自身を除く): 28320608

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, 3967, 4960, 7934, 15868, 19835, 31736, 39670, 63472, 79340, 122977, 126944, 158680, 245954, 317360, 491908, 614885, 634720, 983816, 1229770, 1967632, 2459540, 3935264, 4919080, 9838160, 19676320]

約数ペア:

[(1, 19676320), (2, 9838160), (4, 4919080), (5, 3935264), (8, 2459540), (10, 1967632), (16, 1229770), (20, 983816), (31, 634720), (32, 614885), (40, 491908), (62, 317360), (80, 245954), (124, 158680), (155, 126944), (160, 122977), (248, 79340), (310, 63472), (496, 39670), (620, 31736), (992, 19835), (1240, 15868), (2480, 7934), (3967, 4960)]