21447675

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 42073200

約数和(自身を除く): 20625525

約数列:

[1, 3, 5, 9, 15, 19, 25, 29, 45, 57, 75, 87, 95, 145, 171, 173, 225, 261, 285, 435, 475, 519, 551, 725, 855, 865, 1305, 1425, 1557, 1653, 2175, 2595, 2755, 3287, 4275, 4325, 4959, 5017, 6525, 7785, 8265, 9861, 12975, 13775, 15051, 16435, 24795, 25085, 29583, 38925, 41325, 45153, 49305, 75255, 82175, 95323, 123975, 125425, 147915, 225765, 246525, 285969, 376275, 476615, 739575, 857907, 1128825, 1429845, 2383075, 4289535, 7149225, 21447675]

約数ペア:

[(1, 21447675), (3, 7149225), (5, 4289535), (9, 2383075), (15, 1429845), (19, 1128825), (25, 857907), (29, 739575), (45, 476615), (57, 376275), (75, 285969), (87, 246525), (95, 225765), (145, 147915), (171, 125425), (173, 123975), (225, 95323), (261, 82175), (285, 75255), (435, 49305), (475, 45153), (519, 41325), (551, 38925), (725, 29583), (855, 25085), (865, 24795), (1305, 16435), (1425, 15051), (1557, 13775), (1653, 12975), (2175, 9861), (2595, 8265), (2755, 7785), (3287, 6525), (4275, 5017), (4325, 4959)]