1278984980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{22669}}^1$

素因数の和:22729

約数の個数: 96

約数和(自身を含む): 3412469760

約数和(自身を除く): 2133484780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 364, 403, 434, 455, 620, 806, 868, 910, 1085, 1612, 1820, 2015, 2170, 2821, 4030, 4340, 5642, 8060, 11284, 14105, 22669, 28210, 45338, 56420, 90676, 113345, 158683, 226690, 294697, 317366, 453380, 589394, 634732, 702739, 793415, 1178788, 1405478, 1473485, 1586830, 2062879, 2810956, 2946970, 3173660, 3513695, 4125758, 4919173, 5893940, 7027390, 8251516, 9135607, 9838346, 10314395, 14054780, 18271214, 19676692, 20628790, 24595865, 36542428, 41257580, 45678035, 49191730, 63949249, 91356070, 98383460, 127898498, 182712140, 255796996, 319746245, 639492490, 1278984980]

約数ペア:

[(1, 1278984980), (2, 639492490), (4, 319746245), (5, 255796996), (7, 182712140), (10, 127898498), (13, 98383460), (14, 91356070), (20, 63949249), (26, 49191730), (28, 45678035), (31, 41257580), (35, 36542428), (52, 24595865), (62, 20628790), (65, 19676692), (70, 18271214), (91, 14054780), (124, 10314395), (130, 9838346), (140, 9135607), (155, 8251516), (182, 7027390), (217, 5893940), (260, 4919173), (310, 4125758), (364, 3513695), (403, 3173660), (434, 2946970), (455, 2810956), (620, 2062879), (806, 1586830), (868, 1473485), (910, 1405478), (1085, 1178788), (1612, 793415), (1820, 702739), (2015, 634732), (2170, 589394), (2821, 453380), (4030, 317366), (4340, 294697), (5642, 226690), (8060, 158683), (11284, 113345), (14105, 90676), (22669, 56420), (28210, 45338)]