21204495

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{541}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 40246752

約数和(自身を除く): 19042257

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 67, 117, 195, 201, 335, 541, 585, 603, 871, 1005, 1623, 2613, 2705, 3015, 4355, 4869, 7033, 7839, 8115, 13065, 21099, 24345, 35165, 36247, 39195, 63297, 105495, 108741, 181235, 316485, 326223, 471211, 543705, 1413633, 1631115, 2356055, 4240899, 7068165, 21204495]

約数ペア:

[(1, 21204495), (3, 7068165), (5, 4240899), (9, 2356055), (13, 1631115), (15, 1413633), (39, 543705), (45, 471211), (65, 326223), (67, 316485), (117, 181235), (195, 108741), (201, 105495), (335, 63297), (541, 39195), (585, 36247), (603, 35165), (871, 24345), (1005, 21099), (1623, 13065), (2613, 8115), (2705, 7839), (3015, 7033), (4355, 4869)]