18089540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{823}}^1$

素因数の和:996

約数の個数: 48

約数和(自身を含む): 43744512

約数和(自身を除く): 25654972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 823, 1099, 1570, 1646, 2198, 3140, 3292, 4115, 4396, 5495, 5761, 8230, 10990, 11522, 16460, 21980, 23044, 28805, 57610, 115220, 129211, 258422, 516844, 646055, 904477, 1292110, 1808954, 2584220, 3617908, 4522385, 9044770, 18089540]

約数ペア:

[(1, 18089540), (2, 9044770), (4, 4522385), (5, 3617908), (7, 2584220), (10, 1808954), (14, 1292110), (20, 904477), (28, 646055), (35, 516844), (70, 258422), (140, 129211), (157, 115220), (314, 57610), (628, 28805), (785, 23044), (823, 21980), (1099, 16460), (1570, 11522), (1646, 10990), (2198, 8230), (3140, 5761), (3292, 5495), (4115, 4396)]