19974110

素因数分解:

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

素因数の和:309

約数の個数: 48

約数和(自身を含む): 39844224

約数和(自身を除く): 19870114

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 169, 223, 265, 338, 446, 530, 689, 845, 1115, 1378, 1690, 2230, 2899, 3445, 5798, 6890, 8957, 11819, 14495, 17914, 23638, 28990, 37687, 44785, 59095, 75374, 89570, 118190, 153647, 188435, 307294, 376870, 768235, 1536470, 1997411, 3994822, 9987055, 19974110]

約数ペア:

[(1, 19974110), (2, 9987055), (5, 3994822), (10, 1997411), (13, 1536470), (26, 768235), (53, 376870), (65, 307294), (106, 188435), (130, 153647), (169, 118190), (223, 89570), (265, 75374), (338, 59095), (446, 44785), (530, 37687), (689, 28990), (845, 23638), (1115, 17914), (1378, 14495), (1690, 11819), (2230, 8957), (2899, 6890), (3445, 5798)]