20785518

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1021}}^1$

素因数の和:1074

約数の個数: 64

約数和(自身を含む): 51508800

約数和(自身を除く): 30723282

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 29, 39, 54, 58, 78, 87, 117, 174, 234, 261, 351, 377, 522, 702, 754, 783, 1021, 1131, 1566, 2042, 2262, 3063, 3393, 6126, 6786, 9189, 10179, 13273, 18378, 20358, 26546, 27567, 29609, 39819, 55134, 59218, 79638, 88827, 119457, 177654, 238914, 266481, 358371, 384917, 532962, 716742, 769834, 799443, 1154751, 1598886, 2309502, 3464253, 6928506, 10392759, 20785518]

約数ペア:

[(1, 20785518), (2, 10392759), (3, 6928506), (6, 3464253), (9, 2309502), (13, 1598886), (18, 1154751), (26, 799443), (27, 769834), (29, 716742), (39, 532962), (54, 384917), (58, 358371), (78, 266481), (87, 238914), (117, 177654), (174, 119457), (234, 88827), (261, 79638), (351, 59218), (377, 55134), (522, 39819), (702, 29609), (754, 27567), (783, 26546), (1021, 20358), (1131, 18378), (1566, 13273), (2042, 10179), (2262, 9189), (3063, 6786), (3393, 6126)]