21251280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{88547}}^1$

素因数の和:88563

約数の個数: 40

約数和(自身を含む): 65879712

約数和(自身を除く): 44628432

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 88547, 177094, 265641, 354188, 442735, 531282, 708376, 885470, 1062564, 1328205, 1416752, 1770940, 2125128, 2656410, 3541880, 4250256, 5312820, 7083760, 10625640, 21251280]

約数ペア:

[(1, 21251280), (2, 10625640), (3, 7083760), (4, 5312820), (5, 4250256), (6, 3541880), (8, 2656410), (10, 2125128), (12, 1770940), (15, 1416752), (16, 1328205), (20, 1062564), (24, 885470), (30, 708376), (40, 531282), (48, 442735), (60, 354188), (80, 265641), (120, 177094), (240, 88547)]