20500890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2659}}^1$

素因数の和:2926

約数の個数: 32

約数和(自身を含む): 49412160

約数和(自身を除く): 28911270

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 257, 514, 771, 1285, 1542, 2570, 2659, 3855, 5318, 7710, 7977, 13295, 15954, 26590, 39885, 79770, 683363, 1366726, 2050089, 3416815, 4100178, 6833630, 10250445, 20500890]

約数ペア:

[(1, 20500890), (2, 10250445), (3, 6833630), (5, 4100178), (6, 3416815), (10, 2050089), (15, 1366726), (30, 683363), (257, 79770), (514, 39885), (771, 26590), (1285, 15954), (1542, 13295), (2570, 7977), (2659, 7710), (3855, 5318)]