20767804520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3257}}^1\times {\mathrm{9377}}^1$

素因数の和:12662

約数の個数: 64

約数和(自身を含む): 49496708880

約数和(自身を除く): 28728904360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 3257, 6514, 9377, 13028, 16285, 18754, 26056, 32570, 37508, 46885, 55369, 65140, 75016, 93770, 110738, 130280, 159409, 187540, 221476, 276845, 318818, 375080, 442952, 553690, 637636, 797045, 1107380, 1275272, 1594090, 2214760, 3188180, 6376360, 30540889, 61081778, 122163556, 152704445, 244327112, 305408890, 519195113, 610817780, 1038390226, 1221635560, 2076780452, 2595975565, 4153560904, 5191951130, 10383902260, 20767804520]

約数ペア:

[(1, 20767804520), (2, 10383902260), (4, 5191951130), (5, 4153560904), (8, 2595975565), (10, 2076780452), (17, 1221635560), (20, 1038390226), (34, 610817780), (40, 519195113), (68, 305408890), (85, 244327112), (136, 152704445), (170, 122163556), (340, 61081778), (680, 30540889), (3257, 6376360), (6514, 3188180), (9377, 2214760), (13028, 1594090), (16285, 1275272), (18754, 1107380), (26056, 797045), (32570, 637636), (37508, 553690), (46885, 442952), (55369, 375080), (65140, 318818), (75016, 276845), (93770, 221476), (110738, 187540), (130280, 159409)]