281393820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{239}}^1$

素因数の和:496

約数の個数: 144

約数和(自身を含む): 888975360

約数和(自身を除く): 607581540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 211, 239, 279, 310, 372, 422, 465, 478, 558, 620, 633, 717, 844, 930, 956, 1055, 1116, 1195, 1266, 1395, 1434, 1860, 1899, 2110, 2151, 2390, 2532, 2790, 2868, 3165, 3585, 3798, 4220, 4302, 4780, 5580, 6330, 6541, 7170, 7409, 7596, 8604, 9495, 10755, 12660, 13082, 14340, 14818, 18990, 19623, 21510, 22227, 26164, 29636, 32705, 37045, 37980, 39246, 43020, 44454, 50429, 58869, 65410, 66681, 74090, 78492, 88908, 98115, 100858, 111135, 117738, 130820, 133362, 148180, 151287, 196230, 201716, 222270, 235476, 252145, 266724, 294345, 302574, 333405, 392460, 444540, 453861, 504290, 588690, 605148, 666810, 756435, 907722, 1008580, 1177380, 1333620, 1512870, 1563299, 1815444, 2269305, 3025740, 3126598, 4538610, 4689897, 6253196, 7816495, 9077220, 9379794, 14069691, 15632990, 18759588, 23449485, 28139382, 31265980, 46898970, 56278764, 70348455, 93797940, 140696910, 281393820]

約数ペア:

[(1, 281393820), (2, 140696910), (3, 93797940), (4, 70348455), (5, 56278764), (6, 46898970), (9, 31265980), (10, 28139382), (12, 23449485), (15, 18759588), (18, 15632990), (20, 14069691), (30, 9379794), (31, 9077220), (36, 7816495), (45, 6253196), (60, 4689897), (62, 4538610), (90, 3126598), (93, 3025740), (124, 2269305), (155, 1815444), (180, 1563299), (186, 1512870), (211, 1333620), (239, 1177380), (279, 1008580), (310, 907722), (372, 756435), (422, 666810), (465, 605148), (478, 588690), (558, 504290), (620, 453861), (633, 444540), (717, 392460), (844, 333405), (930, 302574), (956, 294345), (1055, 266724), (1116, 252145), (1195, 235476), (1266, 222270), (1395, 201716), (1434, 196230), (1860, 151287), (1899, 148180), (2110, 133362), (2151, 130820), (2390, 117738), (2532, 111135), (2790, 100858), (2868, 98115), (3165, 88908), (3585, 78492), (3798, 74090), (4220, 66681), (4302, 65410), (4780, 58869), (5580, 50429), (6330, 44454), (6541, 43020), (7170, 39246), (7409, 37980), (7596, 37045), (8604, 32705), (9495, 29636), (10755, 26164), (12660, 22227), (13082, 21510), (14340, 19623), (14818, 18990)]