398978820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{31219}}^1$

素因数の和:31305

約数の個数: 72

約数和(自身を含む): 1227320640

約数和(自身を除く): 828341820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2556, 3195, 4260, 6390, 12780, 31219, 62438, 93657, 124876, 156095, 187314, 280971, 312190, 374628, 468285, 561942, 624380, 936570, 1123884, 1404855, 1873140, 2216549, 2809710, 4433098, 5619420, 6649647, 8866196, 11082745, 13299294, 19948941, 22165490, 26598588, 33248235, 39897882, 44330980, 66496470, 79795764, 99744705, 132992940, 199489410, 398978820]

約数ペア:

[(1, 398978820), (2, 199489410), (3, 132992940), (4, 99744705), (5, 79795764), (6, 66496470), (9, 44330980), (10, 39897882), (12, 33248235), (15, 26598588), (18, 22165490), (20, 19948941), (30, 13299294), (36, 11082745), (45, 8866196), (60, 6649647), (71, 5619420), (90, 4433098), (142, 2809710), (180, 2216549), (213, 1873140), (284, 1404855), (355, 1123884), (426, 936570), (639, 624380), (710, 561942), (852, 468285), (1065, 374628), (1278, 312190), (1420, 280971), (2130, 187314), (2556, 156095), (3195, 124876), (4260, 93657), (6390, 62438), (12780, 31219)]