19428320

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3917}}^1$

素因数の和:3963

約数の個数: 48

約数和(自身を含む): 47392128

約数和(自身を除く): 27963808

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, 3917, 4960, 7834, 15668, 19585, 31336, 39170, 62672, 78340, 121427, 125344, 156680, 242854, 313360, 485708, 607135, 626720, 971416, 1214270, 1942832, 2428540, 3885664, 4857080, 9714160, 19428320]

約数ペア:

[(1, 19428320), (2, 9714160), (4, 4857080), (5, 3885664), (8, 2428540), (10, 1942832), (16, 1214270), (20, 971416), (31, 626720), (32, 607135), (40, 485708), (62, 313360), (80, 242854), (124, 156680), (155, 125344), (160, 121427), (248, 78340), (310, 62672), (496, 39170), (620, 31336), (992, 19585), (1240, 15668), (2480, 7834), (3917, 4960)]