198241280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1249}}^1$

素因数の和:1305

約数の個数: 88

約数和(自身を含む): 491280000

約数和(自身を除く): 293038720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1249, 1280, 1984, 2480, 2498, 2560, 3968, 4960, 4996, 5120, 6245, 7936, 9920, 9992, 12490, 15872, 19840, 19984, 24980, 31744, 38719, 39680, 39968, 49960, 77438, 79360, 79936, 99920, 154876, 158720, 159872, 193595, 199840, 309752, 319744, 387190, 399680, 619504, 639488, 774380, 799360, 1239008, 1278976, 1548760, 1598720, 2478016, 3097520, 3197440, 4956032, 6195040, 6394880, 9912064, 12390080, 19824128, 24780160, 39648256, 49560320, 99120640, 198241280]

約数ペア:

[(1, 198241280), (2, 99120640), (4, 49560320), (5, 39648256), (8, 24780160), (10, 19824128), (16, 12390080), (20, 9912064), (31, 6394880), (32, 6195040), (40, 4956032), (62, 3197440), (64, 3097520), (80, 2478016), (124, 1598720), (128, 1548760), (155, 1278976), (160, 1239008), (248, 799360), (256, 774380), (310, 639488), (320, 619504), (496, 399680), (512, 387190), (620, 319744), (640, 309752), (992, 199840), (1024, 193595), (1240, 159872), (1249, 158720), (1280, 154876), (1984, 99920), (2480, 79936), (2498, 79360), (2560, 77438), (3968, 49960), (4960, 39968), (4996, 39680), (5120, 38719), (6245, 31744), (7936, 24980), (9920, 19984), (9992, 19840), (12490, 15872)]