20489200

素因数分解:

$2^4\times 5^2\times {\mathrm{181}}^1\times {\mathrm{283}}^1$

素因数の和:482

約数の個数: 60

約数和(自身を含む): 49672168

約数和(自身を除く): 29182968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 181, 200, 283, 362, 400, 566, 724, 905, 1132, 1415, 1448, 1810, 2264, 2830, 2896, 3620, 4525, 4528, 5660, 7075, 7240, 9050, 11320, 14150, 14480, 18100, 22640, 28300, 36200, 51223, 56600, 72400, 102446, 113200, 204892, 256115, 409784, 512230, 819568, 1024460, 1280575, 2048920, 2561150, 4097840, 5122300, 10244600, 20489200]

約数ペア:

[(1, 20489200), (2, 10244600), (4, 5122300), (5, 4097840), (8, 2561150), (10, 2048920), (16, 1280575), (20, 1024460), (25, 819568), (40, 512230), (50, 409784), (80, 256115), (100, 204892), (181, 113200), (200, 102446), (283, 72400), (362, 56600), (400, 51223), (566, 36200), (724, 28300), (905, 22640), (1132, 18100), (1415, 14480), (1448, 14150), (1810, 11320), (2264, 9050), (2830, 7240), (2896, 7075), (3620, 5660), (4525, 4528)]