123941720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:289

約数の個数: 128

約数和(自身を含む): 334540800

約数和(自身を除く): 210599080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 109, 124, 131, 140, 155, 217, 218, 248, 262, 280, 310, 434, 436, 524, 545, 620, 655, 763, 868, 872, 917, 1048, 1085, 1090, 1240, 1310, 1526, 1736, 1834, 2170, 2180, 2620, 3052, 3379, 3668, 3815, 4061, 4340, 4360, 4585, 5240, 6104, 6758, 7336, 7630, 8122, 8680, 9170, 13516, 14279, 15260, 16244, 16895, 18340, 20305, 23653, 27032, 28427, 28558, 30520, 32488, 33790, 36680, 40610, 47306, 56854, 57116, 67580, 71395, 81220, 94612, 99953, 113708, 114232, 118265, 135160, 142135, 142790, 162440, 189224, 199906, 227416, 236530, 284270, 285580, 399812, 442649, 473060, 499765, 568540, 571160, 799624, 885298, 946120, 999530, 1137080, 1770596, 1999060, 2213245, 3098543, 3541192, 3998120, 4426490, 6197086, 8852980, 12394172, 15492715, 17705960, 24788344, 30985430, 61970860, 123941720]

約数ペア:

[(1, 123941720), (2, 61970860), (4, 30985430), (5, 24788344), (7, 17705960), (8, 15492715), (10, 12394172), (14, 8852980), (20, 6197086), (28, 4426490), (31, 3998120), (35, 3541192), (40, 3098543), (56, 2213245), (62, 1999060), (70, 1770596), (109, 1137080), (124, 999530), (131, 946120), (140, 885298), (155, 799624), (217, 571160), (218, 568540), (248, 499765), (262, 473060), (280, 442649), (310, 399812), (434, 285580), (436, 284270), (524, 236530), (545, 227416), (620, 199906), (655, 189224), (763, 162440), (868, 142790), (872, 142135), (917, 135160), (1048, 118265), (1085, 114232), (1090, 113708), (1240, 99953), (1310, 94612), (1526, 81220), (1736, 71395), (1834, 67580), (2170, 57116), (2180, 56854), (2620, 47306), (3052, 40610), (3379, 36680), (3668, 33790), (3815, 32488), (4061, 30520), (4340, 28558), (4360, 28427), (4585, 27032), (5240, 23653), (6104, 20305), (6758, 18340), (7336, 16895), (7630, 16244), (8122, 15260), (8680, 14279), (9170, 13516)]