9904780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 21845376

約数和(自身を除く): 11940596

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 82, 94, 164, 188, 205, 235, 257, 410, 470, 514, 820, 940, 1028, 1285, 1927, 2570, 3854, 5140, 7708, 9635, 10537, 12079, 19270, 21074, 24158, 38540, 42148, 48316, 52685, 60395, 105370, 120790, 210740, 241580, 495239, 990478, 1980956, 2476195, 4952390, 9904780]

約数ペア:

[(1, 9904780), (2, 4952390), (4, 2476195), (5, 1980956), (10, 990478), (20, 495239), (41, 241580), (47, 210740), (82, 120790), (94, 105370), (164, 60395), (188, 52685), (205, 48316), (235, 42148), (257, 38540), (410, 24158), (470, 21074), (514, 19270), (820, 12079), (940, 10537), (1028, 9635), (1285, 7708), (1927, 5140), (2570, 3854)]