21206940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{571}}^1\times {\mathrm{619}}^1$

素因数の和:1202

約数の個数: 48

約数和(自身を含む): 59579520

約数和(自身を除く): 38372580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 571, 619, 1142, 1238, 1713, 1857, 2284, 2476, 2855, 3095, 3426, 3714, 5710, 6190, 6852, 7428, 8565, 9285, 11420, 12380, 17130, 18570, 34260, 37140, 353449, 706898, 1060347, 1413796, 1767245, 2120694, 3534490, 4241388, 5301735, 7068980, 10603470, 21206940]

約数ペア:

[(1, 21206940), (2, 10603470), (3, 7068980), (4, 5301735), (5, 4241388), (6, 3534490), (10, 2120694), (12, 1767245), (15, 1413796), (20, 1060347), (30, 706898), (60, 353449), (571, 37140), (619, 34260), (1142, 18570), (1238, 17130), (1713, 12380), (1857, 11420), (2284, 9285), (2476, 8565), (2855, 7428), (3095, 6852), (3426, 6190), (3714, 5710)]