21433880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{877}}^1$

素因数の和:948

約数の個数: 64

約数和(自身を含む): 53101440

約数和(自身を除く): 31667560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 65, 94, 104, 130, 188, 235, 260, 376, 470, 520, 611, 877, 940, 1222, 1754, 1880, 2444, 3055, 3508, 4385, 4888, 6110, 7016, 8770, 11401, 12220, 17540, 22802, 24440, 35080, 41219, 45604, 57005, 82438, 91208, 114010, 164876, 206095, 228020, 329752, 412190, 456040, 535847, 824380, 1071694, 1648760, 2143388, 2679235, 4286776, 5358470, 10716940, 21433880]

約数ペア:

[(1, 21433880), (2, 10716940), (4, 5358470), (5, 4286776), (8, 2679235), (10, 2143388), (13, 1648760), (20, 1071694), (26, 824380), (40, 535847), (47, 456040), (52, 412190), (65, 329752), (94, 228020), (104, 206095), (130, 164876), (188, 114010), (235, 91208), (260, 82438), (376, 57005), (470, 45604), (520, 41219), (611, 35080), (877, 24440), (940, 22802), (1222, 17540), (1754, 12220), (1880, 11401), (2444, 8770), (3055, 7016), (3508, 6110), (4385, 4888)]