2198980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 5362560

約数和(自身を除く): 3163580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 113, 139, 140, 226, 278, 452, 556, 565, 695, 791, 973, 1130, 1390, 1582, 1946, 2260, 2780, 3164, 3892, 3955, 4865, 7910, 9730, 15707, 15820, 19460, 31414, 62828, 78535, 109949, 157070, 219898, 314140, 439796, 549745, 1099490, 2198980]

約数ペア:

[(1, 2198980), (2, 1099490), (4, 549745), (5, 439796), (7, 314140), (10, 219898), (14, 157070), (20, 109949), (28, 78535), (35, 62828), (70, 31414), (113, 19460), (139, 15820), (140, 15707), (226, 9730), (278, 7910), (452, 4865), (556, 3955), (565, 3892), (695, 3164), (791, 2780), (973, 2260), (1130, 1946), (1390, 1582)]