81284140

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{17}}^2\times {\mathrm{41}}^1$

素因数の和:105

約数の個数: 144

約数和(自身を含む): 216619200

約数和(自身を除く): 135335060

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 41, 49, 68, 70, 82, 85, 98, 119, 140, 164, 170, 196, 205, 238, 245, 287, 289, 340, 343, 410, 476, 490, 574, 578, 595, 686, 697, 820, 833, 980, 1148, 1156, 1190, 1372, 1394, 1435, 1445, 1666, 1715, 2009, 2023, 2380, 2788, 2870, 2890, 3332, 3430, 3485, 4018, 4046, 4165, 4879, 5740, 5780, 5831, 6860, 6970, 8036, 8092, 8330, 9758, 10045, 10115, 11662, 11849, 13940, 14063, 14161, 16660, 19516, 20090, 20230, 23324, 23698, 24395, 28126, 28322, 29155, 34153, 40180, 40460, 47396, 48790, 56252, 56644, 58310, 59245, 68306, 70315, 70805, 82943, 97580, 99127, 116620, 118490, 136612, 140630, 141610, 165886, 170765, 198254, 236980, 239071, 281260, 283220, 331772, 341530, 396508, 414715, 478142, 495635, 580601, 683060, 829430, 956284, 991270, 1161202, 1195355, 1658860, 1982540, 2322404, 2390710, 2903005, 4064207, 4781420, 5806010, 8128414, 11612020, 16256828, 20321035, 40642070, 81284140]

約数ペア:

[(1, 81284140), (2, 40642070), (4, 20321035), (5, 16256828), (7, 11612020), (10, 8128414), (14, 5806010), (17, 4781420), (20, 4064207), (28, 2903005), (34, 2390710), (35, 2322404), (41, 1982540), (49, 1658860), (68, 1195355), (70, 1161202), (82, 991270), (85, 956284), (98, 829430), (119, 683060), (140, 580601), (164, 495635), (170, 478142), (196, 414715), (205, 396508), (238, 341530), (245, 331772), (287, 283220), (289, 281260), (340, 239071), (343, 236980), (410, 198254), (476, 170765), (490, 165886), (574, 141610), (578, 140630), (595, 136612), (686, 118490), (697, 116620), (820, 99127), (833, 97580), (980, 82943), (1148, 70805), (1156, 70315), (1190, 68306), (1372, 59245), (1394, 58310), (1435, 56644), (1445, 56252), (1666, 48790), (1715, 47396), (2009, 40460), (2023, 40180), (2380, 34153), (2788, 29155), (2870, 28322), (2890, 28126), (3332, 24395), (3430, 23698), (3485, 23324), (4018, 20230), (4046, 20090), (4165, 19516), (4879, 16660), (5740, 14161), (5780, 14063), (5831, 13940), (6860, 11849), (6970, 11662), (8036, 10115), (8092, 10045), (8330, 9758)]