21529760

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{409}}^1$

素因数の和:478

約数の個数: 96

約数和(自身を含む): 59512320

約数和(自身を除く): 37982560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 70, 80, 94, 112, 140, 160, 188, 224, 235, 280, 329, 376, 409, 470, 560, 658, 752, 818, 940, 1120, 1316, 1504, 1636, 1645, 1880, 2045, 2632, 2863, 3272, 3290, 3760, 4090, 5264, 5726, 6544, 6580, 7520, 8180, 10528, 11452, 13088, 13160, 14315, 16360, 19223, 22904, 26320, 28630, 32720, 38446, 45808, 52640, 57260, 65440, 76892, 91616, 96115, 114520, 134561, 153784, 192230, 229040, 269122, 307568, 384460, 458080, 538244, 615136, 672805, 768920, 1076488, 1345610, 1537840, 2152976, 2691220, 3075680, 4305952, 5382440, 10764880, 21529760]

約数ペア:

[(1, 21529760), (2, 10764880), (4, 5382440), (5, 4305952), (7, 3075680), (8, 2691220), (10, 2152976), (14, 1537840), (16, 1345610), (20, 1076488), (28, 768920), (32, 672805), (35, 615136), (40, 538244), (47, 458080), (56, 384460), (70, 307568), (80, 269122), (94, 229040), (112, 192230), (140, 153784), (160, 134561), (188, 114520), (224, 96115), (235, 91616), (280, 76892), (329, 65440), (376, 57260), (409, 52640), (470, 45808), (560, 38446), (658, 32720), (752, 28630), (818, 26320), (940, 22904), (1120, 19223), (1316, 16360), (1504, 14315), (1636, 13160), (1645, 13088), (1880, 11452), (2045, 10528), (2632, 8180), (2863, 7520), (3272, 6580), (3290, 6544), (3760, 5726), (4090, 5264)]