21199605

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28843}}^1$

素因数の和:28865

約数の個数: 24

約数和(自身を含む): 39458592

約数和(自身を除く): 18258987

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28843, 86529, 144215, 201901, 432645, 605703, 1009505, 1413307, 3028515, 4239921, 7066535, 21199605]

約数ペア:

[(1, 21199605), (3, 7066535), (5, 4239921), (7, 3028515), (15, 1413307), (21, 1009505), (35, 605703), (49, 432645), (105, 201901), (147, 144215), (245, 86529), (735, 28843)]