20410940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{257}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 49542192

約数和(自身を除く): 29131252

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 257, 361, 380, 418, 514, 722, 836, 1028, 1045, 1285, 1444, 1805, 2090, 2570, 2827, 3610, 3971, 4180, 4883, 5140, 5654, 7220, 7942, 9766, 11308, 14135, 15884, 19532, 19855, 24415, 28270, 39710, 48830, 53713, 56540, 79420, 92777, 97660, 107426, 185554, 214852, 268565, 371108, 463885, 537130, 927770, 1020547, 1074260, 1855540, 2041094, 4082188, 5102735, 10205470, 20410940]

約数ペア:

[(1, 20410940), (2, 10205470), (4, 5102735), (5, 4082188), (10, 2041094), (11, 1855540), (19, 1074260), (20, 1020547), (22, 927770), (38, 537130), (44, 463885), (55, 371108), (76, 268565), (95, 214852), (110, 185554), (190, 107426), (209, 97660), (220, 92777), (257, 79420), (361, 56540), (380, 53713), (418, 48830), (514, 39710), (722, 28270), (836, 24415), (1028, 19855), (1045, 19532), (1285, 15884), (1444, 14135), (1805, 11308), (2090, 9766), (2570, 7942), (2827, 7220), (3610, 5654), (3971, 5140), (4180, 4883)]