20812506

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{191}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 49545216

約数和(自身を除く): 28732710

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 127, 143, 191, 254, 286, 381, 382, 429, 573, 762, 858, 1146, 1397, 1651, 2101, 2483, 2794, 3302, 4191, 4202, 4953, 4966, 6303, 7449, 8382, 9906, 12606, 14898, 18161, 24257, 27313, 36322, 48514, 54483, 54626, 72771, 81939, 108966, 145542, 163878, 266827, 315341, 533654, 630682, 800481, 946023, 1600962, 1892046, 3468751, 6937502, 10406253, 20812506]

約数ペア:

[(1, 20812506), (2, 10406253), (3, 6937502), (6, 3468751), (11, 1892046), (13, 1600962), (22, 946023), (26, 800481), (33, 630682), (39, 533654), (66, 315341), (78, 266827), (127, 163878), (143, 145542), (191, 108966), (254, 81939), (286, 72771), (381, 54626), (382, 54483), (429, 48514), (573, 36322), (762, 27313), (858, 24257), (1146, 18161), (1397, 14898), (1651, 12606), (2101, 9906), (2483, 8382), (2794, 7449), (3302, 6303), (4191, 4966), (4202, 4953)]