281688320

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^2\times {\mathrm{229}}^1$

素因数の和:312

約数の個数: 108

約数和(自身を含む): 700243740

約数和(自身を除く): 418555420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 229, 248, 256, 310, 320, 458, 496, 620, 640, 916, 961, 992, 1145, 1240, 1280, 1832, 1922, 1984, 2290, 2480, 3664, 3844, 3968, 4580, 4805, 4960, 7099, 7328, 7688, 7936, 9160, 9610, 9920, 14198, 14656, 15376, 18320, 19220, 19840, 28396, 29312, 30752, 35495, 36640, 38440, 39680, 56792, 58624, 61504, 70990, 73280, 76880, 113584, 123008, 141980, 146560, 153760, 220069, 227168, 246016, 283960, 293120, 307520, 440138, 454336, 567920, 615040, 880276, 908672, 1100345, 1135840, 1230080, 1760552, 1817344, 2200690, 2271680, 3521104, 4401380, 4543360, 7042208, 8802760, 9086720, 14084416, 17605520, 28168832, 35211040, 56337664, 70422080, 140844160, 281688320]

約数ペア:

[(1, 281688320), (2, 140844160), (4, 70422080), (5, 56337664), (8, 35211040), (10, 28168832), (16, 17605520), (20, 14084416), (31, 9086720), (32, 8802760), (40, 7042208), (62, 4543360), (64, 4401380), (80, 3521104), (124, 2271680), (128, 2200690), (155, 1817344), (160, 1760552), (229, 1230080), (248, 1135840), (256, 1100345), (310, 908672), (320, 880276), (458, 615040), (496, 567920), (620, 454336), (640, 440138), (916, 307520), (961, 293120), (992, 283960), (1145, 246016), (1240, 227168), (1280, 220069), (1832, 153760), (1922, 146560), (1984, 141980), (2290, 123008), (2480, 113584), (3664, 76880), (3844, 73280), (3968, 70990), (4580, 61504), (4805, 58624), (4960, 56792), (7099, 39680), (7328, 38440), (7688, 36640), (7936, 35495), (9160, 30752), (9610, 29312), (9920, 28396), (14198, 19840), (14656, 19220), (15376, 18320)]