21915565520

素因数分解:

$2^4\times 5^1\times {\mathrm{883}}^1\times {\mathrm{310243}}^1$

素因数の和:311139

約数の個数: 40

約数和(自身を含む): 51011559456

約数和(自身を除く): 29095993936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 883, 1766, 3532, 4415, 7064, 8830, 14128, 17660, 35320, 70640, 310243, 620486, 1240972, 1551215, 2481944, 3102430, 4963888, 6204860, 12409720, 24819440, 273944569, 547889138, 1095778276, 1369722845, 2191556552, 2739445690, 4383113104, 5478891380, 10957782760, 21915565520]

約数ペア:

[(1, 21915565520), (2, 10957782760), (4, 5478891380), (5, 4383113104), (8, 2739445690), (10, 2191556552), (16, 1369722845), (20, 1095778276), (40, 547889138), (80, 273944569), (883, 24819440), (1766, 12409720), (3532, 6204860), (4415, 4963888), (7064, 3102430), (8830, 2481944), (14128, 1551215), (17660, 1240972), (35320, 620486), (70640, 310243)]