81258100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:266

約数の個数: 144

約数和(自身を含む): 224735616

約数和(自身を除く): 143477516

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 61, 70, 77, 100, 110, 122, 140, 154, 173, 175, 220, 244, 275, 305, 308, 346, 350, 385, 427, 550, 610, 671, 692, 700, 770, 854, 865, 1100, 1211, 1220, 1342, 1525, 1540, 1708, 1730, 1903, 1925, 2135, 2422, 2684, 3050, 3355, 3460, 3806, 3850, 4270, 4325, 4697, 4844, 6055, 6100, 6710, 7612, 7700, 8540, 8650, 9394, 9515, 10553, 10675, 12110, 13321, 13420, 16775, 17300, 18788, 19030, 21106, 21350, 23485, 24220, 26642, 30275, 33550, 38060, 42212, 42700, 46970, 47575, 52765, 53284, 60550, 66605, 67100, 73871, 93940, 95150, 105530, 116083, 117425, 121100, 133210, 147742, 190300, 211060, 232166, 234850, 263825, 266420, 295484, 333025, 369355, 464332, 469700, 527650, 580415, 666050, 738710, 812581, 1055300, 1160830, 1332100, 1477420, 1625162, 1846775, 2321660, 2902075, 3250324, 3693550, 4062905, 5804150, 7387100, 8125810, 11608300, 16251620, 20314525, 40629050, 81258100]

約数ペア:

[(1, 81258100), (2, 40629050), (4, 20314525), (5, 16251620), (7, 11608300), (10, 8125810), (11, 7387100), (14, 5804150), (20, 4062905), (22, 3693550), (25, 3250324), (28, 2902075), (35, 2321660), (44, 1846775), (50, 1625162), (55, 1477420), (61, 1332100), (70, 1160830), (77, 1055300), (100, 812581), (110, 738710), (122, 666050), (140, 580415), (154, 527650), (173, 469700), (175, 464332), (220, 369355), (244, 333025), (275, 295484), (305, 266420), (308, 263825), (346, 234850), (350, 232166), (385, 211060), (427, 190300), (550, 147742), (610, 133210), (671, 121100), (692, 117425), (700, 116083), (770, 105530), (854, 95150), (865, 93940), (1100, 73871), (1211, 67100), (1220, 66605), (1342, 60550), (1525, 53284), (1540, 52765), (1708, 47575), (1730, 46970), (1903, 42700), (1925, 42212), (2135, 38060), (2422, 33550), (2684, 30275), (3050, 26642), (3355, 24220), (3460, 23485), (3806, 21350), (3850, 21106), (4270, 19030), (4325, 18788), (4697, 17300), (4844, 16775), (6055, 13420), (6100, 13321), (6710, 12110), (7612, 10675), (7700, 10553), (8540, 9515), (8650, 9394)]