20869625

素因数分解:

$5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:123

約数の個数: 64

約数和(自身を含む): 33426432

約数和(自身を除く): 12556807

約数列:

[1, 5, 7, 17, 23, 25, 35, 61, 85, 115, 119, 125, 161, 175, 305, 391, 425, 427, 575, 595, 805, 875, 1037, 1403, 1525, 1955, 2125, 2135, 2737, 2875, 2975, 4025, 5185, 7015, 7259, 7625, 9775, 9821, 10675, 13685, 14875, 20125, 23851, 25925, 35075, 36295, 48875, 49105, 53375, 68425, 119255, 129625, 166957, 175375, 181475, 245525, 342125, 596275, 834785, 907375, 1227625, 2981375, 4173925, 20869625]

約数ペア:

[(1, 20869625), (5, 4173925), (7, 2981375), (17, 1227625), (23, 907375), (25, 834785), (35, 596275), (61, 342125), (85, 245525), (115, 181475), (119, 175375), (125, 166957), (161, 129625), (175, 119255), (305, 68425), (391, 53375), (425, 49105), (427, 48875), (575, 36295), (595, 35075), (805, 25925), (875, 23851), (1037, 20125), (1403, 14875), (1525, 13685), (1955, 10675), (2125, 9821), (2135, 9775), (2737, 7625), (2875, 7259), (2975, 7015), (4025, 5185)]