281530340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:278

約数の個数: 144

約数和(自身を含む): 746218368

約数和(自身を除く): 464688028

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 73, 91, 130, 140, 146, 163, 169, 182, 260, 292, 326, 338, 364, 365, 455, 511, 652, 676, 730, 815, 845, 910, 949, 1022, 1141, 1183, 1460, 1630, 1690, 1820, 1898, 2044, 2119, 2282, 2366, 2555, 3260, 3380, 3796, 4238, 4564, 4732, 4745, 5110, 5705, 5915, 6643, 8476, 9490, 10220, 10595, 11410, 11830, 11899, 12337, 13286, 14833, 18980, 21190, 22820, 23660, 23798, 24674, 26572, 27547, 29666, 33215, 42380, 47596, 49348, 55094, 59332, 59495, 61685, 66430, 74165, 83293, 86359, 110188, 118990, 123370, 132860, 137735, 148330, 154687, 166586, 172718, 192829, 237980, 246740, 275470, 296660, 309374, 333172, 345436, 385658, 416465, 431795, 550940, 618748, 771316, 773435, 832930, 863590, 964145, 1082809, 1546870, 1665860, 1727180, 1928290, 2010931, 2165618, 3093740, 3856580, 4021862, 4331236, 5414045, 8043724, 10054655, 10828090, 14076517, 20109310, 21656180, 28153034, 40218620, 56306068, 70382585, 140765170, 281530340]

約数ペア:

[(1, 281530340), (2, 140765170), (4, 70382585), (5, 56306068), (7, 40218620), (10, 28153034), (13, 21656180), (14, 20109310), (20, 14076517), (26, 10828090), (28, 10054655), (35, 8043724), (52, 5414045), (65, 4331236), (70, 4021862), (73, 3856580), (91, 3093740), (130, 2165618), (140, 2010931), (146, 1928290), (163, 1727180), (169, 1665860), (182, 1546870), (260, 1082809), (292, 964145), (326, 863590), (338, 832930), (364, 773435), (365, 771316), (455, 618748), (511, 550940), (652, 431795), (676, 416465), (730, 385658), (815, 345436), (845, 333172), (910, 309374), (949, 296660), (1022, 275470), (1141, 246740), (1183, 237980), (1460, 192829), (1630, 172718), (1690, 166586), (1820, 154687), (1898, 148330), (2044, 137735), (2119, 132860), (2282, 123370), (2366, 118990), (2555, 110188), (3260, 86359), (3380, 83293), (3796, 74165), (4238, 66430), (4564, 61685), (4732, 59495), (4745, 59332), (5110, 55094), (5705, 49348), (5915, 47596), (6643, 42380), (8476, 33215), (9490, 29666), (10220, 27547), (10595, 26572), (11410, 24674), (11830, 23798), (11899, 23660), (12337, 22820), (13286, 21190), (14833, 18980)]