81941440

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{233}}^1$

素因数の和:414

約数の個数: 112

約数和(自身を含む): 225381312

約数和(自身を除く): 143439872

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 157, 160, 224, 233, 280, 314, 320, 448, 466, 560, 628, 785, 932, 1099, 1120, 1165, 1256, 1570, 1631, 1864, 2198, 2240, 2330, 2512, 3140, 3262, 3728, 4396, 4660, 5024, 5495, 6280, 6524, 7456, 8155, 8792, 9320, 10048, 10990, 12560, 13048, 14912, 16310, 17584, 18640, 21980, 25120, 26096, 32620, 35168, 36581, 37280, 43960, 50240, 52192, 65240, 70336, 73162, 74560, 87920, 104384, 130480, 146324, 175840, 182905, 256067, 260960, 292648, 351680, 365810, 512134, 521920, 585296, 731620, 1024268, 1170592, 1280335, 1463240, 2048536, 2341184, 2560670, 2926480, 4097072, 5121340, 5852960, 8194144, 10242680, 11705920, 16388288, 20485360, 40970720, 81941440]

約数ペア:

[(1, 81941440), (2, 40970720), (4, 20485360), (5, 16388288), (7, 11705920), (8, 10242680), (10, 8194144), (14, 5852960), (16, 5121340), (20, 4097072), (28, 2926480), (32, 2560670), (35, 2341184), (40, 2048536), (56, 1463240), (64, 1280335), (70, 1170592), (80, 1024268), (112, 731620), (140, 585296), (157, 521920), (160, 512134), (224, 365810), (233, 351680), (280, 292648), (314, 260960), (320, 256067), (448, 182905), (466, 175840), (560, 146324), (628, 130480), (785, 104384), (932, 87920), (1099, 74560), (1120, 73162), (1165, 70336), (1256, 65240), (1570, 52192), (1631, 50240), (1864, 43960), (2198, 37280), (2240, 36581), (2330, 35168), (2512, 32620), (3140, 26096), (3262, 25120), (3728, 21980), (4396, 18640), (4660, 17584), (5024, 16310), (5495, 14912), (6280, 13048), (6524, 12560), (7456, 10990), (8155, 10048), (8792, 9320)]