19897722

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 72

約数和(自身を含む): 48417408

約数和(自身を除く): 28519686

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 62, 78, 93, 117, 169, 186, 211, 234, 279, 338, 403, 422, 507, 558, 633, 806, 1014, 1209, 1266, 1521, 1899, 2418, 2743, 3042, 3627, 3798, 5239, 5486, 6541, 7254, 8229, 10478, 13082, 15717, 16458, 19623, 24687, 31434, 35659, 39246, 47151, 49374, 58869, 71318, 85033, 94302, 106977, 117738, 170066, 213954, 255099, 320931, 510198, 641862, 765297, 1105429, 1530594, 2210858, 3316287, 6632574, 9948861, 19897722]

約数ペア:

[(1, 19897722), (2, 9948861), (3, 6632574), (6, 3316287), (9, 2210858), (13, 1530594), (18, 1105429), (26, 765297), (31, 641862), (39, 510198), (62, 320931), (78, 255099), (93, 213954), (117, 170066), (169, 117738), (186, 106977), (211, 94302), (234, 85033), (279, 71318), (338, 58869), (403, 49374), (422, 47151), (507, 39246), (558, 35659), (633, 31434), (806, 24687), (1014, 19623), (1209, 16458), (1266, 15717), (1521, 13082), (1899, 10478), (2418, 8229), (2743, 7254), (3042, 6541), (3627, 5486), (3798, 5239)]