20280320

素因数分解:

$2^{10}\times 5^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1$

素因数の和:275

約数の個数: 88

約数和(自身を含む): 51731784

約数和(自身を除く): 31451464

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 233, 256, 272, 320, 340, 466, 512, 544, 640, 680, 932, 1024, 1088, 1165, 1280, 1360, 1864, 2176, 2330, 2560, 2720, 3728, 3961, 4352, 4660, 5120, 5440, 7456, 7922, 8704, 9320, 10880, 14912, 15844, 17408, 18640, 19805, 21760, 29824, 31688, 37280, 39610, 43520, 59648, 63376, 74560, 79220, 87040, 119296, 126752, 149120, 158440, 238592, 253504, 298240, 316880, 507008, 596480, 633760, 1014016, 1192960, 1267520, 2028032, 2535040, 4056064, 5070080, 10140160, 20280320]

約数ペア:

[(1, 20280320), (2, 10140160), (4, 5070080), (5, 4056064), (8, 2535040), (10, 2028032), (16, 1267520), (17, 1192960), (20, 1014016), (32, 633760), (34, 596480), (40, 507008), (64, 316880), (68, 298240), (80, 253504), (85, 238592), (128, 158440), (136, 149120), (160, 126752), (170, 119296), (233, 87040), (256, 79220), (272, 74560), (320, 63376), (340, 59648), (466, 43520), (512, 39610), (544, 37280), (640, 31688), (680, 29824), (932, 21760), (1024, 19805), (1088, 18640), (1165, 17408), (1280, 15844), (1360, 14912), (1864, 10880), (2176, 9320), (2330, 8704), (2560, 7922), (2720, 7456), (3728, 5440), (3961, 5120), (4352, 4660)]