178550020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{829}}^1$

素因数の和:949

約数の個数: 72

約数和(自身を含む): 417274200

約数和(自身を除く): 238724180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 121, 178, 220, 242, 356, 445, 484, 605, 829, 890, 979, 1210, 1658, 1780, 1958, 2420, 3316, 3916, 4145, 4895, 8290, 9119, 9790, 10769, 16580, 18238, 19580, 21538, 36476, 43076, 45595, 53845, 73781, 91190, 100309, 107690, 147562, 182380, 200618, 215380, 295124, 368905, 401236, 501545, 737810, 811591, 1003090, 1475620, 1623182, 2006180, 3246364, 4057955, 8115910, 8927501, 16231820, 17855002, 35710004, 44637505, 89275010, 178550020]

約数ペア:

[(1, 178550020), (2, 89275010), (4, 44637505), (5, 35710004), (10, 17855002), (11, 16231820), (20, 8927501), (22, 8115910), (44, 4057955), (55, 3246364), (89, 2006180), (110, 1623182), (121, 1475620), (178, 1003090), (220, 811591), (242, 737810), (356, 501545), (445, 401236), (484, 368905), (605, 295124), (829, 215380), (890, 200618), (979, 182380), (1210, 147562), (1658, 107690), (1780, 100309), (1958, 91190), (2420, 73781), (3316, 53845), (3916, 45595), (4145, 43076), (4895, 36476), (8290, 21538), (9119, 19580), (9790, 18238), (10769, 16580)]