201326180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{12889}}^1$

素因数の和:12980

約数の個数: 48

約数和(自身を含む): 467752320

約数和(自身を除く): 266426140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3905, 7810, 12889, 15620, 25778, 51556, 64445, 128890, 141779, 257780, 283558, 567116, 708895, 915119, 1417790, 1830238, 2835580, 3660476, 4575595, 9151190, 10066309, 18302380, 20132618, 40265236, 50331545, 100663090, 201326180]

約数ペア:

[(1, 201326180), (2, 100663090), (4, 50331545), (5, 40265236), (10, 20132618), (11, 18302380), (20, 10066309), (22, 9151190), (44, 4575595), (55, 3660476), (71, 2835580), (110, 1830238), (142, 1417790), (220, 915119), (284, 708895), (355, 567116), (710, 283558), (781, 257780), (1420, 141779), (1562, 128890), (3124, 64445), (3905, 51556), (7810, 25778), (12889, 15620)]