20739900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{257}}^1\times {\mathrm{269}}^1$

素因数の和:543

約数の個数: 72

約数和(自身を含む): 60464880

約数和(自身を除く): 39724980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 257, 269, 300, 514, 538, 771, 807, 1028, 1076, 1285, 1345, 1542, 1614, 2570, 2690, 3084, 3228, 3855, 4035, 5140, 5380, 6425, 6725, 7710, 8070, 12850, 13450, 15420, 16140, 19275, 20175, 25700, 26900, 38550, 40350, 69133, 77100, 80700, 138266, 207399, 276532, 345665, 414798, 691330, 829596, 1036995, 1382660, 1728325, 2073990, 3456650, 4147980, 5184975, 6913300, 10369950, 20739900]

約数ペア:

[(1, 20739900), (2, 10369950), (3, 6913300), (4, 5184975), (5, 4147980), (6, 3456650), (10, 2073990), (12, 1728325), (15, 1382660), (20, 1036995), (25, 829596), (30, 691330), (50, 414798), (60, 345665), (75, 276532), (100, 207399), (150, 138266), (257, 80700), (269, 77100), (300, 69133), (514, 40350), (538, 38550), (771, 26900), (807, 25700), (1028, 20175), (1076, 19275), (1285, 16140), (1345, 15420), (1542, 13450), (1614, 12850), (2570, 8070), (2690, 7710), (3084, 6725), (3228, 6425), (3855, 5380), (4035, 5140)]