21708675

素因数分解:

$3^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{1109}}^1$

素因数の和:1157

約数の個数: 48

約数和(自身を含む): 41292000

約数和(自身を除く): 19583325

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 87, 135, 145, 225, 261, 435, 675, 725, 783, 1109, 1305, 2175, 3327, 3915, 5545, 6525, 9981, 16635, 19575, 27725, 29943, 32161, 49905, 83175, 96483, 149715, 160805, 249525, 289449, 482415, 748575, 804025, 868347, 1447245, 2412075, 4341735, 7236225, 21708675]

約数ペア:

[(1, 21708675), (3, 7236225), (5, 4341735), (9, 2412075), (15, 1447245), (25, 868347), (27, 804025), (29, 748575), (45, 482415), (75, 289449), (87, 249525), (135, 160805), (145, 149715), (225, 96483), (261, 83175), (435, 49905), (675, 32161), (725, 29943), (783, 27725), (1109, 19575), (1305, 16635), (2175, 9981), (3327, 6525), (3915, 5545)]