20968506

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:208

約数の個数: 72

約数和(自身を含む): 50444316

約数和(自身を除く): 29475810

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 61, 78, 113, 117, 122, 169, 183, 226, 234, 338, 339, 366, 507, 549, 678, 793, 1014, 1017, 1098, 1469, 1521, 1586, 2034, 2379, 2938, 3042, 4407, 4758, 6893, 7137, 8814, 10309, 13221, 13786, 14274, 19097, 20618, 20679, 26442, 30927, 38194, 41358, 57291, 61854, 62037, 89609, 92781, 114582, 124074, 171873, 179218, 185562, 268827, 343746, 537654, 806481, 1164917, 1612962, 2329834, 3494751, 6989502, 10484253, 20968506]

約数ペア:

[(1, 20968506), (2, 10484253), (3, 6989502), (6, 3494751), (9, 2329834), (13, 1612962), (18, 1164917), (26, 806481), (39, 537654), (61, 343746), (78, 268827), (113, 185562), (117, 179218), (122, 171873), (169, 124074), (183, 114582), (226, 92781), (234, 89609), (338, 62037), (339, 61854), (366, 57291), (507, 41358), (549, 38194), (678, 30927), (793, 26442), (1014, 20679), (1017, 20618), (1098, 19097), (1469, 14274), (1521, 13786), (1586, 13221), (2034, 10309), (2379, 8814), (2938, 7137), (3042, 6893), (4407, 4758)]