2148460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 4898880

約数和(自身を除く): 2750420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 89, 142, 170, 178, 284, 340, 355, 356, 445, 710, 890, 1207, 1420, 1513, 1780, 2414, 3026, 4828, 6035, 6052, 6319, 7565, 12070, 12638, 15130, 24140, 25276, 30260, 31595, 63190, 107423, 126380, 214846, 429692, 537115, 1074230, 2148460]

約数ペア:

[(1, 2148460), (2, 1074230), (4, 537115), (5, 429692), (10, 214846), (17, 126380), (20, 107423), (34, 63190), (68, 31595), (71, 30260), (85, 25276), (89, 24140), (142, 15130), (170, 12638), (178, 12070), (284, 7565), (340, 6319), (355, 6052), (356, 6035), (445, 4828), (710, 3026), (890, 2414), (1207, 1780), (1420, 1513)]