21595525

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^2\times {\mathrm{61}}^1$

素因数の和:119

約数の個数: 54

約数和(自身を含む): 33633078

約数和(自身を除く): 12037553

約数列:

[1, 5, 7, 17, 25, 35, 49, 61, 85, 119, 175, 245, 289, 305, 425, 427, 595, 833, 1037, 1225, 1445, 1525, 2023, 2135, 2975, 2989, 4165, 5185, 7225, 7259, 10115, 10675, 14161, 14945, 17629, 20825, 25925, 36295, 50575, 50813, 70805, 74725, 88145, 123403, 181475, 254065, 354025, 440725, 617015, 863821, 1270325, 3085075, 4319105, 21595525]

約数ペア:

[(1, 21595525), (5, 4319105), (7, 3085075), (17, 1270325), (25, 863821), (35, 617015), (49, 440725), (61, 354025), (85, 254065), (119, 181475), (175, 123403), (245, 88145), (289, 74725), (305, 70805), (425, 50813), (427, 50575), (595, 36295), (833, 25925), (1037, 20825), (1225, 17629), (1445, 14945), (1525, 14161), (2023, 10675), (2135, 10115), (2975, 7259), (2989, 7225), (4165, 5185)]