21282375

素因数分解:

$3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:169

約数の個数: 64

約数和(自身を含む): 38937600

約数和(自身を除く): 17655225

約数列:

[1, 3, 5, 15, 19, 25, 29, 57, 75, 87, 95, 103, 125, 145, 285, 309, 375, 435, 475, 515, 551, 725, 1425, 1545, 1653, 1957, 2175, 2375, 2575, 2755, 2987, 3625, 5871, 7125, 7725, 8265, 8961, 9785, 10875, 12875, 13775, 14935, 29355, 38625, 41325, 44805, 48925, 56753, 68875, 74675, 146775, 170259, 206625, 224025, 244625, 283765, 373375, 733875, 851295, 1120125, 1418825, 4256475, 7094125, 21282375]

約数ペア:

[(1, 21282375), (3, 7094125), (5, 4256475), (15, 1418825), (19, 1120125), (25, 851295), (29, 733875), (57, 373375), (75, 283765), (87, 244625), (95, 224025), (103, 206625), (125, 170259), (145, 146775), (285, 74675), (309, 68875), (375, 56753), (435, 48925), (475, 44805), (515, 41325), (551, 38625), (725, 29355), (1425, 14935), (1545, 13775), (1653, 12875), (1957, 10875), (2175, 9785), (2375, 8961), (2575, 8265), (2755, 7725), (2987, 7125), (3625, 5871)]