20921450108

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{191}}^1\times {\mathrm{13417}}^1$

素因数の和:13782

約数の個数: 48

約数和(自身を含む): 39890747904

約数和(自身を除く): 18969297796

約数列:

[1, 2, 4, 13, 26, 52, 157, 191, 314, 382, 628, 764, 2041, 2483, 4082, 4966, 8164, 9932, 13417, 26834, 29987, 53668, 59974, 119948, 174421, 348842, 389831, 697684, 779662, 1559324, 2106469, 2562647, 4212938, 5125294, 8425876, 10250588, 27384097, 33314411, 54768194, 66628822, 109536388, 133257644, 402335579, 804671158, 1609342316, 5230362527, 10460725054, 20921450108]

約数ペア:

[(1, 20921450108), (2, 10460725054), (4, 5230362527), (13, 1609342316), (26, 804671158), (52, 402335579), (157, 133257644), (191, 109536388), (314, 66628822), (382, 54768194), (628, 33314411), (764, 27384097), (2041, 10250588), (2483, 8425876), (4082, 5125294), (4966, 4212938), (8164, 2562647), (9932, 2106469), (13417, 1559324), (26834, 779662), (29987, 697684), (53668, 389831), (59974, 348842), (119948, 174421)]