19526260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 45654840

約数和(自身を除く): 26128580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 109, 130, 169, 212, 218, 260, 265, 338, 436, 530, 545, 676, 689, 845, 1060, 1090, 1378, 1417, 1690, 2180, 2756, 2834, 3380, 3445, 5668, 5777, 6890, 7085, 8957, 11554, 13780, 14170, 17914, 18421, 23108, 28340, 28885, 35828, 36842, 44785, 57770, 73684, 75101, 89570, 92105, 115540, 150202, 179140, 184210, 300404, 368420, 375505, 751010, 976313, 1502020, 1952626, 3905252, 4881565, 9763130, 19526260]

約数ペア:

[(1, 19526260), (2, 9763130), (4, 4881565), (5, 3905252), (10, 1952626), (13, 1502020), (20, 976313), (26, 751010), (52, 375505), (53, 368420), (65, 300404), (106, 184210), (109, 179140), (130, 150202), (169, 115540), (212, 92105), (218, 89570), (260, 75101), (265, 73684), (338, 57770), (436, 44785), (530, 36842), (545, 35828), (676, 28885), (689, 28340), (845, 23108), (1060, 18421), (1090, 17914), (1378, 14170), (1417, 13780), (1690, 11554), (2180, 8957), (2756, 7085), (2834, 6890), (3380, 5777), (3445, 5668)]