21623120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8719}}^1$

素因数の和:8763

約数の個数: 40

約数和(自身を含む): 51901440

約数和(自身を除く): 30278320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8719, 17438, 34876, 43595, 69752, 87190, 139504, 174380, 270289, 348760, 540578, 697520, 1081156, 1351445, 2162312, 2702890, 4324624, 5405780, 10811560, 21623120]

約数ペア:

[(1, 21623120), (2, 10811560), (4, 5405780), (5, 4324624), (8, 2702890), (10, 2162312), (16, 1351445), (20, 1081156), (31, 697520), (40, 540578), (62, 348760), (80, 270289), (124, 174380), (155, 139504), (248, 87190), (310, 69752), (496, 43595), (620, 34876), (1240, 17438), (2480, 8719)]