257130390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{21059}}^1$

素因数の和:21117

約数の個数: 64

約数和(自身を含む): 691441920

約数和(自身を除く): 434311530

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 37, 55, 66, 74, 110, 111, 165, 185, 222, 330, 370, 407, 555, 814, 1110, 1221, 2035, 2442, 4070, 6105, 12210, 21059, 42118, 63177, 105295, 126354, 210590, 231649, 315885, 463298, 631770, 694947, 779183, 1158245, 1389894, 1558366, 2316490, 2337549, 3474735, 3895915, 4675098, 6949470, 7791830, 8571013, 11687745, 17142026, 23375490, 25713039, 42855065, 51426078, 85710130, 128565195, 257130390]

約数ペア:

[(1, 257130390), (2, 128565195), (3, 85710130), (5, 51426078), (6, 42855065), (10, 25713039), (11, 23375490), (15, 17142026), (22, 11687745), (30, 8571013), (33, 7791830), (37, 6949470), (55, 4675098), (66, 3895915), (74, 3474735), (110, 2337549), (111, 2316490), (165, 1558366), (185, 1389894), (222, 1158245), (330, 779183), (370, 694947), (407, 631770), (555, 463298), (814, 315885), (1110, 231649), (1221, 210590), (2035, 126354), (2442, 105295), (4070, 63177), (6105, 42118), (12210, 21059)]