397788780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{389989}}^1$

素因数の和:390018

約数の個数: 48

約数和(自身を含む): 1179329760

約数和(自身を除く): 781540980

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, 389989, 779978, 1169967, 1559956, 1949945, 2339934, 3899890, 4679868, 5849835, 6629813, 7799780, 11699670, 13259626, 19889439, 23399340, 26519252, 33149065, 39778878, 66298130, 79557756, 99447195, 132596260, 198894390, 397788780]

約数ペア:

[(1, 397788780), (2, 198894390), (3, 132596260), (4, 99447195), (5, 79557756), (6, 66298130), (10, 39778878), (12, 33149065), (15, 26519252), (17, 23399340), (20, 19889439), (30, 13259626), (34, 11699670), (51, 7799780), (60, 6629813), (68, 5849835), (85, 4679868), (102, 3899890), (170, 2339934), (204, 1949945), (255, 1559956), (340, 1169967), (510, 779978), (1020, 389989)]