21185255

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{461}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 31667328

約数和(自身を除く): 10482073

約数列:

[1, 5, 7, 13, 35, 65, 91, 101, 455, 461, 505, 707, 1313, 2305, 3227, 3535, 5993, 6565, 9191, 16135, 29965, 41951, 45955, 46561, 209755, 232805, 325927, 605293, 1629635, 3026465, 4237051, 21185255]

約数ペア:

[(1, 21185255), (5, 4237051), (7, 3026465), (13, 1629635), (35, 605293), (65, 325927), (91, 232805), (101, 209755), (455, 46561), (461, 45955), (505, 41951), (707, 29965), (1313, 16135), (2305, 9191), (3227, 6565), (3535, 5993)]