21302115

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{751}}^1$

素因数の和:851

約数の個数: 32

約数和(自身を含む): 35807232

約数和(自身を除く): 14505117

約数列:

[1, 3, 5, 15, 31, 61, 93, 155, 183, 305, 465, 751, 915, 1891, 2253, 3755, 5673, 9455, 11265, 23281, 28365, 45811, 69843, 116405, 137433, 229055, 349215, 687165, 1420141, 4260423, 7100705, 21302115]

約数ペア:

[(1, 21302115), (3, 7100705), (5, 4260423), (15, 1420141), (31, 687165), (61, 349215), (93, 229055), (155, 137433), (183, 116405), (305, 69843), (465, 45811), (751, 28365), (915, 23281), (1891, 11265), (2253, 9455), (3755, 5673)]