81945195

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 142463520

約数和(自身を除く): 60518325

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 111, 185, 285, 361, 409, 555, 703, 1083, 1227, 1805, 2045, 2109, 3515, 5415, 6135, 7771, 10545, 13357, 15133, 23313, 38855, 40071, 45399, 66785, 75665, 116565, 147649, 200355, 226995, 287527, 442947, 738245, 862581, 1437635, 2214735, 4312905, 5463013, 16389039, 27315065, 81945195]

約数ペア:

[(1, 81945195), (3, 27315065), (5, 16389039), (15, 5463013), (19, 4312905), (37, 2214735), (57, 1437635), (95, 862581), (111, 738245), (185, 442947), (285, 287527), (361, 226995), (409, 200355), (555, 147649), (703, 116565), (1083, 75665), (1227, 66785), (1805, 45399), (2045, 40071), (2109, 38855), (3515, 23313), (5415, 15133), (6135, 13357), (7771, 10545)]