78996680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:547

約数の個数: 128

約数和(自身を含む): 221184000

約数和(自身を除く): 142187320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 31, 35, 38, 40, 56, 62, 70, 76, 95, 124, 133, 140, 152, 155, 190, 217, 248, 266, 280, 310, 380, 434, 479, 532, 589, 620, 665, 760, 868, 958, 1064, 1085, 1178, 1240, 1330, 1736, 1916, 2170, 2356, 2395, 2660, 2945, 3353, 3832, 4123, 4340, 4712, 4790, 5320, 5890, 6706, 8246, 8680, 9101, 9580, 11780, 13412, 14849, 16492, 16765, 18202, 19160, 20615, 23560, 26824, 29698, 32984, 33530, 36404, 41230, 45505, 59396, 63707, 67060, 72808, 74245, 82460, 91010, 103943, 118792, 127414, 134120, 148490, 164920, 182020, 207886, 254828, 282131, 296980, 318535, 364040, 415772, 509656, 519715, 564262, 593960, 637070, 831544, 1039430, 1128524, 1274140, 1410655, 1974917, 2078860, 2257048, 2548280, 2821310, 3949834, 4157720, 5642620, 7899668, 9874585, 11285240, 15799336, 19749170, 39498340, 78996680]

約数ペア:

[(1, 78996680), (2, 39498340), (4, 19749170), (5, 15799336), (7, 11285240), (8, 9874585), (10, 7899668), (14, 5642620), (19, 4157720), (20, 3949834), (28, 2821310), (31, 2548280), (35, 2257048), (38, 2078860), (40, 1974917), (56, 1410655), (62, 1274140), (70, 1128524), (76, 1039430), (95, 831544), (124, 637070), (133, 593960), (140, 564262), (152, 519715), (155, 509656), (190, 415772), (217, 364040), (248, 318535), (266, 296980), (280, 282131), (310, 254828), (380, 207886), (434, 182020), (479, 164920), (532, 148490), (589, 134120), (620, 127414), (665, 118792), (760, 103943), (868, 91010), (958, 82460), (1064, 74245), (1085, 72808), (1178, 67060), (1240, 63707), (1330, 59396), (1736, 45505), (1916, 41230), (2170, 36404), (2356, 33530), (2395, 32984), (2660, 29698), (2945, 26824), (3353, 23560), (3832, 20615), (4123, 19160), (4340, 18202), (4712, 16765), (4790, 16492), (5320, 14849), (5890, 13412), (6706, 11780), (8246, 9580), (8680, 9101)]