21098025

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7213}}^1$

素因数の和:7242

約数の個数: 36

約数和(自身を含む): 40701388

約数和(自身を除く): 19603363

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7213, 21639, 36065, 64917, 93769, 108195, 180325, 281307, 324585, 468845, 540975, 843921, 1406535, 1622925, 2344225, 4219605, 7032675, 21098025]

約数ペア:

[(1, 21098025), (3, 7032675), (5, 4219605), (9, 2344225), (13, 1622925), (15, 1406535), (25, 843921), (39, 540975), (45, 468845), (65, 324585), (75, 281307), (117, 180325), (195, 108195), (225, 93769), (325, 64917), (585, 36065), (975, 21639), (2925, 7213)]