721855260

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{27281}}^1$

素因数の和:27313

約数の個数: 144

約数和(自身を含む): 2612524320

約数和(自身を除く): 1890669060

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 210, 245, 252, 270, 294, 315, 378, 420, 441, 490, 540, 588, 630, 735, 756, 882, 945, 980, 1260, 1323, 1470, 1764, 1890, 2205, 2646, 2940, 3780, 4410, 5292, 6615, 8820, 13230, 26460, 27281, 54562, 81843, 109124, 136405, 163686, 190967, 245529, 272810, 327372, 381934, 409215, 491058, 545620, 572901, 736587, 763868, 818430, 954835, 982116, 1145802, 1227645, 1336769, 1473174, 1636860, 1718703, 1909670, 2291604, 2455290, 2673538, 2864505, 2946348, 3437406, 3682935, 3819340, 4010307, 4910580, 5156109, 5347076, 5729010, 6683845, 6874812, 7365870, 8020614, 8593515, 10312218, 11458020, 12030921, 13367690, 14731740, 16041228, 17187030, 20051535, 20624436, 24061842, 25780545, 26735380, 34374060, 36092763, 40103070, 48123684, 51561090, 60154605, 72185526, 80206140, 103122180, 120309210, 144371052, 180463815, 240618420, 360927630, 721855260]

約数ペア:

[(1, 721855260), (2, 360927630), (3, 240618420), (4, 180463815), (5, 144371052), (6, 120309210), (7, 103122180), (9, 80206140), (10, 72185526), (12, 60154605), (14, 51561090), (15, 48123684), (18, 40103070), (20, 36092763), (21, 34374060), (27, 26735380), (28, 25780545), (30, 24061842), (35, 20624436), (36, 20051535), (42, 17187030), (45, 16041228), (49, 14731740), (54, 13367690), (60, 12030921), (63, 11458020), (70, 10312218), (84, 8593515), (90, 8020614), (98, 7365870), (105, 6874812), (108, 6683845), (126, 5729010), (135, 5347076), (140, 5156109), (147, 4910580), (180, 4010307), (189, 3819340), (196, 3682935), (210, 3437406), (245, 2946348), (252, 2864505), (270, 2673538), (294, 2455290), (315, 2291604), (378, 1909670), (420, 1718703), (441, 1636860), (490, 1473174), (540, 1336769), (588, 1227645), (630, 1145802), (735, 982116), (756, 954835), (882, 818430), (945, 763868), (980, 736587), (1260, 572901), (1323, 545620), (1470, 491058), (1764, 409215), (1890, 381934), (2205, 327372), (2646, 272810), (2940, 245529), (3780, 190967), (4410, 163686), (5292, 136405), (6615, 109124), (8820, 81843), (13230, 54562), (26460, 27281)]