2180420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:101

約数の個数: 72

約数和(自身を含む): 5429592

約数和(自身を除く): 3249172

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 53, 55, 68, 85, 106, 110, 121, 170, 187, 212, 220, 242, 265, 340, 374, 484, 530, 583, 605, 748, 901, 935, 1060, 1166, 1210, 1802, 1870, 2057, 2332, 2420, 2915, 3604, 3740, 4114, 4505, 5830, 6413, 8228, 9010, 9911, 10285, 11660, 12826, 18020, 19822, 20570, 25652, 32065, 39644, 41140, 49555, 64130, 99110, 109021, 128260, 198220, 218042, 436084, 545105, 1090210, 2180420]

約数ペア:

[(1, 2180420), (2, 1090210), (4, 545105), (5, 436084), (10, 218042), (11, 198220), (17, 128260), (20, 109021), (22, 99110), (34, 64130), (44, 49555), (53, 41140), (55, 39644), (68, 32065), (85, 25652), (106, 20570), (110, 19822), (121, 18020), (170, 12826), (187, 11660), (212, 10285), (220, 9911), (242, 9010), (265, 8228), (340, 6413), (374, 5830), (484, 4505), (530, 4114), (583, 3740), (605, 3604), (748, 2915), (901, 2420), (935, 2332), (1060, 2057), (1166, 1870), (1210, 1802)]