19626568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{653}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 42163380

約数和(自身を除く): 22536812

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 289, 442, 578, 653, 884, 1156, 1306, 1768, 2312, 2612, 3757, 5224, 7514, 8489, 11101, 15028, 16978, 22202, 30056, 33956, 44404, 67912, 88808, 144313, 188717, 288626, 377434, 577252, 754868, 1154504, 1509736, 2453321, 4906642, 9813284, 19626568]

約数ペア:

[(1, 19626568), (2, 9813284), (4, 4906642), (8, 2453321), (13, 1509736), (17, 1154504), (26, 754868), (34, 577252), (52, 377434), (68, 288626), (104, 188717), (136, 144313), (221, 88808), (289, 67912), (442, 44404), (578, 33956), (653, 30056), (884, 22202), (1156, 16978), (1306, 15028), (1768, 11101), (2312, 8489), (2612, 7514), (3757, 5224)]