243780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 725760

約数和(自身を除く): 481980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 239, 255, 340, 478, 510, 717, 956, 1020, 1195, 1434, 2390, 2868, 3585, 4063, 4780, 7170, 8126, 12189, 14340, 16252, 20315, 24378, 40630, 48756, 60945, 81260, 121890, 243780]

約数ペア:

[(1, 243780), (2, 121890), (3, 81260), (4, 60945), (5, 48756), (6, 40630), (10, 24378), (12, 20315), (15, 16252), (17, 14340), (20, 12189), (30, 8126), (34, 7170), (51, 4780), (60, 4063), (68, 3585), (85, 2868), (102, 2390), (170, 1434), (204, 1195), (239, 1020), (255, 956), (340, 717), (478, 510)]