20441340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:216

約数の個数: 144

約数和(自身を含む): 67267200

約数和(自身を除く): 46825860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 43, 45, 57, 60, 76, 86, 90, 95, 114, 129, 139, 171, 172, 180, 190, 215, 228, 258, 278, 285, 342, 380, 387, 417, 430, 516, 556, 570, 645, 684, 695, 774, 817, 834, 855, 860, 1140, 1251, 1290, 1390, 1548, 1634, 1668, 1710, 1935, 2085, 2451, 2502, 2580, 2641, 2780, 3268, 3420, 3870, 4085, 4170, 4902, 5004, 5282, 5977, 6255, 7353, 7740, 7923, 8170, 8340, 9804, 10564, 11954, 12255, 12510, 13205, 14706, 15846, 16340, 17931, 23769, 23908, 24510, 25020, 26410, 29412, 29885, 31692, 35862, 36765, 39615, 47538, 49020, 52820, 53793, 59770, 71724, 73530, 79230, 89655, 95076, 107586, 113563, 118845, 119540, 147060, 158460, 179310, 215172, 227126, 237690, 268965, 340689, 358620, 454252, 475380, 537930, 567815, 681378, 1022067, 1075860, 1135630, 1362756, 1703445, 2044134, 2271260, 3406890, 4088268, 5110335, 6813780, 10220670, 20441340]

約数ペア:

[(1, 20441340), (2, 10220670), (3, 6813780), (4, 5110335), (5, 4088268), (6, 3406890), (9, 2271260), (10, 2044134), (12, 1703445), (15, 1362756), (18, 1135630), (19, 1075860), (20, 1022067), (30, 681378), (36, 567815), (38, 537930), (43, 475380), (45, 454252), (57, 358620), (60, 340689), (76, 268965), (86, 237690), (90, 227126), (95, 215172), (114, 179310), (129, 158460), (139, 147060), (171, 119540), (172, 118845), (180, 113563), (190, 107586), (215, 95076), (228, 89655), (258, 79230), (278, 73530), (285, 71724), (342, 59770), (380, 53793), (387, 52820), (417, 49020), (430, 47538), (516, 39615), (556, 36765), (570, 35862), (645, 31692), (684, 29885), (695, 29412), (774, 26410), (817, 25020), (834, 24510), (855, 23908), (860, 23769), (1140, 17931), (1251, 16340), (1290, 15846), (1390, 14706), (1548, 13205), (1634, 12510), (1668, 12255), (1710, 11954), (1935, 10564), (2085, 9804), (2451, 8340), (2502, 8170), (2580, 7923), (2641, 7740), (2780, 7353), (3268, 6255), (3420, 5977), (3870, 5282), (4085, 5004), (4170, 4902)]