256564220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61379}}^1$

素因数の和:61418

約数の個数: 48

約数和(自身を含む): 618710400

約数和(自身を除く): 362146180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 61379, 122758, 245516, 306895, 613790, 675169, 1166201, 1227580, 1350338, 2332402, 2700676, 3375845, 4664804, 5831005, 6751690, 11662010, 12828211, 13503380, 23324020, 25656422, 51312844, 64141055, 128282110, 256564220]

約数ペア:

[(1, 256564220), (2, 128282110), (4, 64141055), (5, 51312844), (10, 25656422), (11, 23324020), (19, 13503380), (20, 12828211), (22, 11662010), (38, 6751690), (44, 5831005), (55, 4664804), (76, 3375845), (95, 2700676), (110, 2332402), (190, 1350338), (209, 1227580), (220, 1166201), (380, 675169), (418, 613790), (836, 306895), (1045, 245516), (2090, 122758), (4180, 61379)]