20565710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 43075584

約数和(自身を除く): 22509874

約数列:

[1, 2, 5, 10, 11, 22, 31, 37, 55, 62, 74, 110, 155, 163, 185, 310, 326, 341, 370, 407, 682, 814, 815, 1147, 1630, 1705, 1793, 2035, 2294, 3410, 3586, 4070, 5053, 5735, 6031, 8965, 10106, 11470, 12062, 12617, 17930, 25234, 25265, 30155, 50530, 55583, 60310, 63085, 66341, 111166, 126170, 132682, 186961, 277915, 331705, 373922, 555830, 663410, 934805, 1869610, 2056571, 4113142, 10282855, 20565710]

約数ペア:

[(1, 20565710), (2, 10282855), (5, 4113142), (10, 2056571), (11, 1869610), (22, 934805), (31, 663410), (37, 555830), (55, 373922), (62, 331705), (74, 277915), (110, 186961), (155, 132682), (163, 126170), (185, 111166), (310, 66341), (326, 63085), (341, 60310), (370, 55583), (407, 50530), (682, 30155), (814, 25265), (815, 25234), (1147, 17930), (1630, 12617), (1705, 12062), (1793, 11470), (2035, 10106), (2294, 8965), (3410, 6031), (3586, 5735), (4070, 5053)]