21894640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{947}}^1$

素因数の和:994

約数の個数: 60

約数和(自身を含む): 54132696

約数和(自身を除く): 32238056

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 289, 340, 578, 680, 947, 1156, 1360, 1445, 1894, 2312, 2890, 3788, 4624, 4735, 5780, 7576, 9470, 11560, 15152, 16099, 18940, 23120, 32198, 37880, 64396, 75760, 80495, 128792, 160990, 257584, 273683, 321980, 547366, 643960, 1094732, 1287920, 1368415, 2189464, 2736830, 4378928, 5473660, 10947320, 21894640]

約数ペア:

[(1, 21894640), (2, 10947320), (4, 5473660), (5, 4378928), (8, 2736830), (10, 2189464), (16, 1368415), (17, 1287920), (20, 1094732), (34, 643960), (40, 547366), (68, 321980), (80, 273683), (85, 257584), (136, 160990), (170, 128792), (272, 80495), (289, 75760), (340, 64396), (578, 37880), (680, 32198), (947, 23120), (1156, 18940), (1360, 16099), (1445, 15152), (1894, 11560), (2312, 9470), (2890, 7576), (3788, 5780), (4624, 4735)]