20796780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20389}}^1$

素因数の和:20418

約数の個数: 48

約数和(自身を含む): 61659360

約数和(自身を除く): 40862580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20389, 40778, 61167, 81556, 101945, 122334, 203890, 244668, 305835, 346613, 407780, 611670, 693226, 1039839, 1223340, 1386452, 1733065, 2079678, 3466130, 4159356, 5199195, 6932260, 10398390, 20796780]

約数ペア:

[(1, 20796780), (2, 10398390), (3, 6932260), (4, 5199195), (5, 4159356), (6, 3466130), (10, 2079678), (12, 1733065), (15, 1386452), (17, 1223340), (20, 1039839), (30, 693226), (34, 611670), (51, 407780), (60, 346613), (68, 305835), (85, 244668), (102, 203890), (170, 122334), (204, 101945), (255, 81556), (340, 61167), (510, 40778), (1020, 20389)]