2556499840

素因数分解:

$2^7\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{443}}^1$

素因数の和:660

約数の個数: 128

約数和(自身を含む): 6260613120

約数和(自身を除く): 3704113280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 127, 128, 142, 160, 254, 284, 320, 355, 443, 508, 568, 635, 640, 710, 886, 1016, 1136, 1270, 1420, 1772, 2032, 2215, 2272, 2540, 2840, 3544, 4064, 4430, 4544, 5080, 5680, 7088, 8128, 8860, 9017, 9088, 10160, 11360, 14176, 16256, 17720, 18034, 20320, 22720, 28352, 31453, 35440, 36068, 40640, 45085, 45440, 56261, 56704, 62906, 70880, 72136, 81280, 90170, 112522, 125812, 141760, 144272, 157265, 180340, 225044, 251624, 281305, 283520, 288544, 314530, 360680, 450088, 503248, 562610, 577088, 629060, 721360, 900176, 1006496, 1125220, 1154176, 1258120, 1442720, 1800352, 2012992, 2250440, 2516240, 2885440, 3600704, 3994531, 4025984, 4500880, 5032480, 5770880, 7201408, 7989062, 9001760, 10064960, 15978124, 18003520, 19972655, 20129920, 31956248, 36007040, 39945310, 63912496, 79890620, 127824992, 159781240, 255649984, 319562480, 511299968, 639124960, 1278249920, 2556499840]

約数ペア:

[(1, 2556499840), (2, 1278249920), (4, 639124960), (5, 511299968), (8, 319562480), (10, 255649984), (16, 159781240), (20, 127824992), (32, 79890620), (40, 63912496), (64, 39945310), (71, 36007040), (80, 31956248), (127, 20129920), (128, 19972655), (142, 18003520), (160, 15978124), (254, 10064960), (284, 9001760), (320, 7989062), (355, 7201408), (443, 5770880), (508, 5032480), (568, 4500880), (635, 4025984), (640, 3994531), (710, 3600704), (886, 2885440), (1016, 2516240), (1136, 2250440), (1270, 2012992), (1420, 1800352), (1772, 1442720), (2032, 1258120), (2215, 1154176), (2272, 1125220), (2540, 1006496), (2840, 900176), (3544, 721360), (4064, 629060), (4430, 577088), (4544, 562610), (5080, 503248), (5680, 450088), (7088, 360680), (8128, 314530), (8860, 288544), (9017, 283520), (9088, 281305), (10160, 251624), (11360, 225044), (14176, 180340), (16256, 157265), (17720, 144272), (18034, 141760), (20320, 125812), (22720, 112522), (28352, 90170), (31453, 81280), (35440, 72136), (36068, 70880), (40640, 62906), (45085, 56704), (45440, 56261)]