39948220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 92969856

約数和(自身を除く): 53021636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 169, 212, 223, 260, 265, 338, 446, 530, 676, 689, 845, 892, 1060, 1115, 1378, 1690, 2230, 2756, 2899, 3380, 3445, 4460, 5798, 6890, 8957, 11596, 11819, 13780, 14495, 17914, 23638, 28990, 35828, 37687, 44785, 47276, 57980, 59095, 75374, 89570, 118190, 150748, 153647, 179140, 188435, 236380, 307294, 376870, 614588, 753740, 768235, 1536470, 1997411, 3072940, 3994822, 7989644, 9987055, 19974110, 39948220]

約数ペア:

[(1, 39948220), (2, 19974110), (4, 9987055), (5, 7989644), (10, 3994822), (13, 3072940), (20, 1997411), (26, 1536470), (52, 768235), (53, 753740), (65, 614588), (106, 376870), (130, 307294), (169, 236380), (212, 188435), (223, 179140), (260, 153647), (265, 150748), (338, 118190), (446, 89570), (530, 75374), (676, 59095), (689, 57980), (845, 47276), (892, 44785), (1060, 37687), (1115, 35828), (1378, 28990), (1690, 23638), (2230, 17914), (2756, 14495), (2899, 13780), (3380, 11819), (3445, 11596), (4460, 8957), (5798, 6890)]