2639650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:187

約数の個数: 48

約数和(自身を含む): 5499648

約数和(自身を除く): 2859998

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 131, 155, 262, 310, 325, 403, 650, 655, 775, 806, 1310, 1550, 1703, 2015, 3275, 3406, 4030, 4061, 6550, 8122, 8515, 10075, 17030, 20150, 20305, 40610, 42575, 52793, 85150, 101525, 105586, 203050, 263965, 527930, 1319825, 2639650]

約数ペア:

[(1, 2639650), (2, 1319825), (5, 527930), (10, 263965), (13, 203050), (25, 105586), (26, 101525), (31, 85150), (50, 52793), (62, 42575), (65, 40610), (130, 20305), (131, 20150), (155, 17030), (262, 10075), (310, 8515), (325, 8122), (403, 6550), (650, 4061), (655, 4030), (775, 3406), (806, 3275), (1310, 2015), (1550, 1703)]