890991990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{281}}^1\times {\mathrm{719}}^1$

素因数の和:1027

約数の個数: 144

約数和(自身を含む): 2708147520

約数和(自身を除く): 1817155530

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 281, 294, 315, 441, 490, 562, 630, 719, 735, 843, 882, 1405, 1438, 1470, 1686, 1967, 2157, 2205, 2529, 2810, 3595, 3934, 4215, 4314, 4410, 5033, 5058, 5901, 6471, 7190, 8430, 9835, 10066, 10785, 11802, 12645, 12942, 13769, 15099, 17703, 19670, 21570, 25165, 25290, 27538, 29505, 30198, 32355, 35231, 35406, 41307, 45297, 50330, 59010, 64710, 68845, 70462, 75495, 82614, 88515, 90594, 105693, 123921, 137690, 150990, 176155, 177030, 202039, 206535, 211386, 226485, 247842, 317079, 352310, 404078, 413070, 452970, 528465, 606117, 619605, 634158, 1010195, 1056930, 1212234, 1239210, 1414273, 1585395, 1818351, 2020390, 2828546, 3030585, 3170790, 3636702, 4242819, 6061170, 7071365, 8485638, 9091755, 9899911, 12728457, 14142730, 18183510, 19799822, 21214095, 25456914, 29699733, 42428190, 49499555, 59399466, 63642285, 89099199, 98999110, 127284570, 148498665, 178198398, 296997330, 445495995, 890991990]

約数ペア:

[(1, 890991990), (2, 445495995), (3, 296997330), (5, 178198398), (6, 148498665), (7, 127284570), (9, 98999110), (10, 89099199), (14, 63642285), (15, 59399466), (18, 49499555), (21, 42428190), (30, 29699733), (35, 25456914), (42, 21214095), (45, 19799822), (49, 18183510), (63, 14142730), (70, 12728457), (90, 9899911), (98, 9091755), (105, 8485638), (126, 7071365), (147, 6061170), (210, 4242819), (245, 3636702), (281, 3170790), (294, 3030585), (315, 2828546), (441, 2020390), (490, 1818351), (562, 1585395), (630, 1414273), (719, 1239210), (735, 1212234), (843, 1056930), (882, 1010195), (1405, 634158), (1438, 619605), (1470, 606117), (1686, 528465), (1967, 452970), (2157, 413070), (2205, 404078), (2529, 352310), (2810, 317079), (3595, 247842), (3934, 226485), (4215, 211386), (4314, 206535), (4410, 202039), (5033, 177030), (5058, 176155), (5901, 150990), (6471, 137690), (7190, 123921), (8430, 105693), (9835, 90594), (10066, 88515), (10785, 82614), (11802, 75495), (12645, 70462), (12942, 68845), (13769, 64710), (15099, 59010), (17703, 50330), (19670, 45297), (21570, 41307), (25165, 35406), (25290, 35231), (27538, 32355), (29505, 30198)]