19918704

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:394

約数の個数: 80

約数和(自身を含む): 56058912

約数和(自身を除く): 36140208

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 137, 156, 208, 233, 274, 312, 411, 466, 548, 624, 699, 822, 932, 1096, 1398, 1644, 1781, 1864, 2192, 2796, 3029, 3288, 3562, 3728, 5343, 5592, 6058, 6576, 7124, 9087, 10686, 11184, 12116, 14248, 18174, 21372, 24232, 28496, 31921, 36348, 42744, 48464, 63842, 72696, 85488, 95763, 127684, 145392, 191526, 255368, 383052, 414973, 510736, 766104, 829946, 1244919, 1532208, 1659892, 2489838, 3319784, 4979676, 6639568, 9959352, 19918704]

約数ペア:

[(1, 19918704), (2, 9959352), (3, 6639568), (4, 4979676), (6, 3319784), (8, 2489838), (12, 1659892), (13, 1532208), (16, 1244919), (24, 829946), (26, 766104), (39, 510736), (48, 414973), (52, 383052), (78, 255368), (104, 191526), (137, 145392), (156, 127684), (208, 95763), (233, 85488), (274, 72696), (312, 63842), (411, 48464), (466, 42744), (548, 36348), (624, 31921), (699, 28496), (822, 24232), (932, 21372), (1096, 18174), (1398, 14248), (1644, 12116), (1781, 11184), (1864, 10686), (2192, 9087), (2796, 7124), (3029, 6576), (3288, 6058), (3562, 5592), (3728, 5343)]