181971140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{6421}}^1$

素因数の和:6552

約数の個数: 48

約数和(自身を含む): 415374960

約数和(自身を除く): 233403820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2180, 2834, 5668, 6421, 7085, 12842, 14170, 25684, 28340, 32105, 64210, 83473, 128420, 166946, 333892, 417365, 699889, 834730, 1399778, 1669460, 2799556, 3499445, 6998890, 9098557, 13997780, 18197114, 36394228, 45492785, 90985570, 181971140]

約数ペア:

[(1, 181971140), (2, 90985570), (4, 45492785), (5, 36394228), (10, 18197114), (13, 13997780), (20, 9098557), (26, 6998890), (52, 3499445), (65, 2799556), (109, 1669460), (130, 1399778), (218, 834730), (260, 699889), (436, 417365), (545, 333892), (1090, 166946), (1417, 128420), (2180, 83473), (2834, 64210), (5668, 32105), (6421, 28340), (7085, 25684), (12842, 14170)]