20383120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8219}}^1$

素因数の和:8263

約数の個数: 40

約数和(自身を含む): 48925440

約数和(自身を除く): 28542320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8219, 16438, 32876, 41095, 65752, 82190, 131504, 164380, 254789, 328760, 509578, 657520, 1019156, 1273945, 2038312, 2547890, 4076624, 5095780, 10191560, 20383120]

約数ペア:

[(1, 20383120), (2, 10191560), (4, 5095780), (5, 4076624), (8, 2547890), (10, 2038312), (16, 1273945), (20, 1019156), (31, 657520), (40, 509578), (62, 328760), (80, 254789), (124, 164380), (155, 131504), (248, 82190), (310, 65752), (496, 41095), (620, 32876), (1240, 16438), (2480, 8219)]