21507675

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 41283072

約数和(自身を除く): 19775397

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 71, 75, 105, 175, 213, 355, 497, 525, 577, 1065, 1491, 1731, 1775, 2485, 2885, 4039, 5325, 7455, 8655, 12117, 12425, 14425, 20195, 37275, 40967, 43275, 60585, 100975, 122901, 204835, 286769, 302925, 614505, 860307, 1024175, 1433845, 3072525, 4301535, 7169225, 21507675]

約数ペア:

[(1, 21507675), (3, 7169225), (5, 4301535), (7, 3072525), (15, 1433845), (21, 1024175), (25, 860307), (35, 614505), (71, 302925), (75, 286769), (105, 204835), (175, 122901), (213, 100975), (355, 60585), (497, 43275), (525, 40967), (577, 37275), (1065, 20195), (1491, 14425), (1731, 12425), (1775, 12117), (2485, 8655), (2885, 7455), (4039, 5325)]