19781944

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{937}}^1$

素因数の和:992

約数の個数: 64

約数和(自身を含む): 47275200

約数和(自身を除く): 27493256

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 29, 52, 56, 58, 91, 104, 116, 182, 203, 232, 364, 377, 406, 728, 754, 812, 937, 1508, 1624, 1874, 2639, 3016, 3748, 5278, 6559, 7496, 10556, 12181, 13118, 21112, 24362, 26236, 27173, 48724, 52472, 54346, 85267, 97448, 108692, 170534, 190211, 217384, 341068, 353249, 380422, 682136, 706498, 760844, 1412996, 1521688, 2472743, 2825992, 4945486, 9890972, 19781944]

約数ペア:

[(1, 19781944), (2, 9890972), (4, 4945486), (7, 2825992), (8, 2472743), (13, 1521688), (14, 1412996), (26, 760844), (28, 706498), (29, 682136), (52, 380422), (56, 353249), (58, 341068), (91, 217384), (104, 190211), (116, 170534), (182, 108692), (203, 97448), (232, 85267), (364, 54346), (377, 52472), (406, 48724), (728, 27173), (754, 26236), (812, 24362), (937, 21112), (1508, 13118), (1624, 12181), (1874, 10556), (2639, 7496), (3016, 6559), (3748, 5278)]