20808110440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1399}}^1\times {\mathrm{28603}}^1$

素因数の和:30026

約数の個数: 64

約数和(自身を含む): 50457456000

約数和(自身を除く): 29649345560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1399, 2798, 5596, 6995, 11192, 13990, 18187, 27980, 28603, 36374, 55960, 57206, 72748, 90935, 114412, 143015, 145496, 181870, 228824, 286030, 363740, 371839, 572060, 727480, 743678, 1144120, 1487356, 1859195, 2974712, 3718390, 7436780, 14873560, 40015597, 80031194, 160062388, 200077985, 320124776, 400155970, 520202761, 800311940, 1040405522, 1600623880, 2080811044, 2601013805, 4161622088, 5202027610, 10404055220, 20808110440]

約数ペア:

[(1, 20808110440), (2, 10404055220), (4, 5202027610), (5, 4161622088), (8, 2601013805), (10, 2080811044), (13, 1600623880), (20, 1040405522), (26, 800311940), (40, 520202761), (52, 400155970), (65, 320124776), (104, 200077985), (130, 160062388), (260, 80031194), (520, 40015597), (1399, 14873560), (2798, 7436780), (5596, 3718390), (6995, 2974712), (11192, 1859195), (13990, 1487356), (18187, 1144120), (27980, 743678), (28603, 727480), (36374, 572060), (55960, 371839), (57206, 363740), (72748, 286030), (90935, 228824), (114412, 181870), (143015, 145496)]