42719980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:451

約数の個数: 72

約数和(自身を含む): 100573200

約数和(自身を除く): 57853220

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 289, 323, 340, 380, 389, 578, 646, 778, 1156, 1292, 1445, 1556, 1615, 1945, 2890, 3230, 3890, 5491, 5780, 6460, 6613, 7391, 7780, 10982, 13226, 14782, 21964, 26452, 27455, 29564, 33065, 36955, 54910, 66130, 73910, 109820, 112421, 125647, 132260, 147820, 224842, 251294, 449684, 502588, 562105, 628235, 1124210, 1256470, 2135999, 2248420, 2512940, 4271998, 8543996, 10679995, 21359990, 42719980]

約数ペア:

[(1, 42719980), (2, 21359990), (4, 10679995), (5, 8543996), (10, 4271998), (17, 2512940), (19, 2248420), (20, 2135999), (34, 1256470), (38, 1124210), (68, 628235), (76, 562105), (85, 502588), (95, 449684), (170, 251294), (190, 224842), (289, 147820), (323, 132260), (340, 125647), (380, 112421), (389, 109820), (578, 73910), (646, 66130), (778, 54910), (1156, 36955), (1292, 33065), (1445, 29564), (1556, 27455), (1615, 26452), (1945, 21964), (2890, 14782), (3230, 13226), (3890, 10982), (5491, 7780), (5780, 7391), (6460, 6613)]