320401280

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{283}}^1$

素因数の和:392

約数の個数: 128

約数和(自身を含む): 808207200

約数和(自身を除く): 487805920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 61, 64, 80, 116, 122, 128, 145, 160, 232, 244, 283, 290, 305, 320, 464, 488, 566, 580, 610, 640, 928, 976, 1132, 1160, 1220, 1415, 1769, 1856, 1952, 2264, 2320, 2440, 2830, 3538, 3712, 3904, 4528, 4640, 4880, 5660, 7076, 7808, 8207, 8845, 9056, 9280, 9760, 11320, 14152, 16414, 17263, 17690, 18112, 18560, 19520, 22640, 28304, 32828, 34526, 35380, 36224, 39040, 41035, 45280, 56608, 65656, 69052, 70760, 82070, 86315, 90560, 113216, 131312, 138104, 141520, 164140, 172630, 181120, 226432, 262624, 276208, 283040, 328280, 345260, 500627, 525248, 552416, 566080, 656560, 690520, 1001254, 1050496, 1104832, 1132160, 1313120, 1381040, 2002508, 2209664, 2503135, 2626240, 2762080, 4005016, 5006270, 5252480, 5524160, 8010032, 10012540, 11048320, 16020064, 20025080, 32040128, 40050160, 64080256, 80100320, 160200640, 320401280]

約数ペア:

[(1, 320401280), (2, 160200640), (4, 80100320), (5, 64080256), (8, 40050160), (10, 32040128), (16, 20025080), (20, 16020064), (29, 11048320), (32, 10012540), (40, 8010032), (58, 5524160), (61, 5252480), (64, 5006270), (80, 4005016), (116, 2762080), (122, 2626240), (128, 2503135), (145, 2209664), (160, 2002508), (232, 1381040), (244, 1313120), (283, 1132160), (290, 1104832), (305, 1050496), (320, 1001254), (464, 690520), (488, 656560), (566, 566080), (580, 552416), (610, 525248), (640, 500627), (928, 345260), (976, 328280), (1132, 283040), (1160, 276208), (1220, 262624), (1415, 226432), (1769, 181120), (1856, 172630), (1952, 164140), (2264, 141520), (2320, 138104), (2440, 131312), (2830, 113216), (3538, 90560), (3712, 86315), (3904, 82070), (4528, 70760), (4640, 69052), (4880, 65656), (5660, 56608), (7076, 45280), (7808, 41035), (8207, 39040), (8845, 36224), (9056, 35380), (9280, 34526), (9760, 32828), (11320, 28304), (14152, 22640), (16414, 19520), (17263, 18560), (17690, 18112)]