71209790

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^2$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 138430080

約数和(自身を除く): 67220290

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 89, 145, 155, 178, 290, 310, 445, 890, 899, 1798, 2581, 2759, 4495, 5162, 5518, 7921, 8990, 12905, 13795, 15842, 25810, 27590, 39605, 79210, 80011, 160022, 229709, 245551, 400055, 459418, 491102, 800110, 1148545, 1227755, 2297090, 2455510, 7120979, 14241958, 35604895, 71209790]

約数ペア:

[(1, 71209790), (2, 35604895), (5, 14241958), (10, 7120979), (29, 2455510), (31, 2297090), (58, 1227755), (62, 1148545), (89, 800110), (145, 491102), (155, 459418), (178, 400055), (290, 245551), (310, 229709), (445, 160022), (890, 80011), (899, 79210), (1798, 39605), (2581, 27590), (2759, 25810), (4495, 15842), (5162, 13795), (5518, 12905), (7921, 8990)]