210526420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{8017}}^1$

素因数の和:8140

約数の個数: 48

約数和(自身を含む): 480887568

約数和(自身を除く): 270361148

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 1010, 1313, 2020, 2626, 5252, 6565, 8017, 13130, 16034, 26260, 32068, 40085, 80170, 104221, 160340, 208442, 416884, 521105, 809717, 1042210, 1619434, 2084420, 3238868, 4048585, 8097170, 10526321, 16194340, 21052642, 42105284, 52631605, 105263210, 210526420]

約数ペア:

[(1, 210526420), (2, 105263210), (4, 52631605), (5, 42105284), (10, 21052642), (13, 16194340), (20, 10526321), (26, 8097170), (52, 4048585), (65, 3238868), (101, 2084420), (130, 1619434), (202, 1042210), (260, 809717), (404, 521105), (505, 416884), (1010, 208442), (1313, 160340), (2020, 104221), (2626, 80170), (5252, 40085), (6565, 32068), (8017, 26260), (13130, 16034)]