1278605380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{258827}}^1$

素因数の和:258868

約数の個数: 48

約数和(自身を含む): 3043817280

約数和(自身を除く): 1765211900

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 258827, 517654, 1035308, 1294135, 2588270, 3364751, 4917713, 5176540, 6729502, 9835426, 13459004, 16823755, 19670852, 24588565, 33647510, 49177130, 63930269, 67295020, 98354260, 127860538, 255721076, 319651345, 639302690, 1278605380]

約数ペア:

[(1, 1278605380), (2, 639302690), (4, 319651345), (5, 255721076), (10, 127860538), (13, 98354260), (19, 67295020), (20, 63930269), (26, 49177130), (38, 33647510), (52, 24588565), (65, 19670852), (76, 16823755), (95, 13459004), (130, 9835426), (190, 6729502), (247, 5176540), (260, 4917713), (380, 3364751), (494, 2588270), (988, 1294135), (1235, 1035308), (2470, 517654), (4940, 258827)]