20912210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 44509824

約数和(自身を除く): 23597614

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 53, 55, 85, 106, 110, 170, 187, 211, 265, 374, 422, 530, 583, 901, 935, 1055, 1166, 1802, 1870, 2110, 2321, 2915, 3587, 4505, 4642, 5830, 7174, 9010, 9911, 11183, 11605, 17935, 19822, 22366, 23210, 35870, 39457, 49555, 55915, 78914, 99110, 111830, 123013, 190111, 197285, 246026, 380222, 394570, 615065, 950555, 1230130, 1901110, 2091221, 4182442, 10456105, 20912210]

約数ペア:

[(1, 20912210), (2, 10456105), (5, 4182442), (10, 2091221), (11, 1901110), (17, 1230130), (22, 950555), (34, 615065), (53, 394570), (55, 380222), (85, 246026), (106, 197285), (110, 190111), (170, 123013), (187, 111830), (211, 99110), (265, 78914), (374, 55915), (422, 49555), (530, 39457), (583, 35870), (901, 23210), (935, 22366), (1055, 19822), (1166, 17935), (1802, 11605), (1870, 11183), (2110, 9911), (2321, 9010), (2915, 7174), (3587, 5830), (4505, 4642)]