21815235

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 19462365

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 89, 117, 195, 267, 419, 445, 585, 801, 1157, 1257, 1335, 2095, 3471, 3771, 4005, 5447, 5785, 6285, 10413, 16341, 17355, 18855, 27235, 37291, 49023, 52065, 81705, 111873, 186455, 245115, 335619, 484783, 559365, 1454349, 1678095, 2423915, 4363047, 7271745, 21815235]

約数ペア:

[(1, 21815235), (3, 7271745), (5, 4363047), (9, 2423915), (13, 1678095), (15, 1454349), (39, 559365), (45, 484783), (65, 335619), (89, 245115), (117, 186455), (195, 111873), (267, 81705), (419, 52065), (445, 49023), (585, 37291), (801, 27235), (1157, 18855), (1257, 17355), (1335, 16341), (2095, 10413), (3471, 6285), (3771, 5785), (4005, 5447)]