397907820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{431}}^1$

素因数の和:692

約数の個数: 144

約数和(自身を含む): 1268047872

約数和(自身を除く): 870140052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 223, 230, 276, 345, 414, 431, 446, 460, 669, 690, 828, 862, 892, 1035, 1115, 1293, 1338, 1380, 1724, 2007, 2070, 2155, 2230, 2586, 2676, 3345, 3879, 4014, 4140, 4310, 4460, 5129, 5172, 6465, 6690, 7758, 8028, 8620, 9913, 10035, 10258, 12930, 13380, 15387, 15516, 19395, 19826, 20070, 20516, 25645, 25860, 29739, 30774, 38790, 39652, 40140, 46161, 49565, 51290, 59478, 61548, 76935, 77580, 89217, 92322, 96113, 99130, 102580, 118956, 148695, 153870, 178434, 184644, 192226, 198260, 230805, 288339, 297390, 307740, 356868, 384452, 446085, 461610, 480565, 576678, 594780, 865017, 892170, 923220, 961130, 1153356, 1441695, 1730034, 1784340, 1922260, 2210599, 2883390, 3460068, 4325085, 4421198, 5766780, 6631797, 8650170, 8842396, 11052995, 13263594, 17300340, 19895391, 22105990, 26527188, 33158985, 39790782, 44211980, 66317970, 79581564, 99476955, 132635940, 198953910, 397907820]

約数ペア:

[(1, 397907820), (2, 198953910), (3, 132635940), (4, 99476955), (5, 79581564), (6, 66317970), (9, 44211980), (10, 39790782), (12, 33158985), (15, 26527188), (18, 22105990), (20, 19895391), (23, 17300340), (30, 13263594), (36, 11052995), (45, 8842396), (46, 8650170), (60, 6631797), (69, 5766780), (90, 4421198), (92, 4325085), (115, 3460068), (138, 2883390), (180, 2210599), (207, 1922260), (223, 1784340), (230, 1730034), (276, 1441695), (345, 1153356), (414, 961130), (431, 923220), (446, 892170), (460, 865017), (669, 594780), (690, 576678), (828, 480565), (862, 461610), (892, 446085), (1035, 384452), (1115, 356868), (1293, 307740), (1338, 297390), (1380, 288339), (1724, 230805), (2007, 198260), (2070, 192226), (2155, 184644), (2230, 178434), (2586, 153870), (2676, 148695), (3345, 118956), (3879, 102580), (4014, 99130), (4140, 96113), (4310, 92322), (4460, 89217), (5129, 77580), (5172, 76935), (6465, 61548), (6690, 59478), (7758, 51290), (8028, 49565), (8620, 46161), (9913, 40140), (10035, 39652), (10258, 38790), (12930, 30774), (13380, 29739), (15387, 25860), (15516, 25645), (19395, 20516), (19826, 20070)]