21631515

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{503}}^1$

素因数の和:619

約数の個数: 32

約数和(自身を含む): 35997696

約数和(自身を除く): 14366181

約数列:

[1, 3, 5, 15, 47, 61, 141, 183, 235, 305, 503, 705, 915, 1509, 2515, 2867, 7545, 8601, 14335, 23641, 30683, 43005, 70923, 92049, 118205, 153415, 354615, 460245, 1442101, 4326303, 7210505, 21631515]

約数ペア:

[(1, 21631515), (3, 7210505), (5, 4326303), (15, 1442101), (47, 460245), (61, 354615), (141, 153415), (183, 118205), (235, 92049), (305, 70923), (503, 43005), (705, 30683), (915, 23641), (1509, 14335), (2515, 8601), (2867, 7545)]