19813976

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1601}}^1$

素因数の和:1644

約数の個数: 64

約数和(自身を含む): 48444480

約数和(自身を除く): 28630504

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 26, 28, 34, 52, 56, 68, 91, 104, 119, 136, 182, 221, 238, 364, 442, 476, 728, 884, 952, 1547, 1601, 1768, 3094, 3202, 6188, 6404, 11207, 12376, 12808, 20813, 22414, 27217, 41626, 44828, 54434, 83252, 89656, 108868, 145691, 166504, 190519, 217736, 291382, 353821, 381038, 582764, 707642, 762076, 1165528, 1415284, 1524152, 2476747, 2830568, 4953494, 9906988, 19813976]

約数ペア:

[(1, 19813976), (2, 9906988), (4, 4953494), (7, 2830568), (8, 2476747), (13, 1524152), (14, 1415284), (17, 1165528), (26, 762076), (28, 707642), (34, 582764), (52, 381038), (56, 353821), (68, 291382), (91, 217736), (104, 190519), (119, 166504), (136, 145691), (182, 108868), (221, 89656), (238, 83252), (364, 54434), (442, 44828), (476, 41626), (728, 27217), (884, 22414), (952, 20813), (1547, 12808), (1601, 12376), (1768, 11207), (3094, 6404), (3202, 6188)]