158721920

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:596

約数の個数: 128

約数和(自身を含む): 440640000

約数和(自身を除く): 281918080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 112, 128, 140, 142, 160, 224, 280, 284, 320, 355, 448, 497, 499, 560, 568, 640, 710, 896, 994, 998, 1120, 1136, 1420, 1988, 1996, 2240, 2272, 2485, 2495, 2840, 3493, 3976, 3992, 4480, 4544, 4970, 4990, 5680, 6986, 7952, 7984, 9088, 9940, 9980, 11360, 13972, 15904, 15968, 17465, 19880, 19960, 22720, 27944, 31808, 31936, 34930, 35429, 39760, 39920, 45440, 55888, 63616, 63872, 69860, 70858, 79520, 79840, 111776, 139720, 141716, 159040, 159680, 177145, 223552, 248003, 279440, 283432, 318080, 319360, 354290, 447104, 496006, 558880, 566864, 708580, 992012, 1117760, 1133728, 1240015, 1417160, 1984024, 2235520, 2267456, 2480030, 2834320, 3968048, 4534912, 4960060, 5668640, 7936096, 9920120, 11337280, 15872192, 19840240, 22674560, 31744384, 39680480, 79360960, 158721920]

約数ペア:

[(1, 158721920), (2, 79360960), (4, 39680480), (5, 31744384), (7, 22674560), (8, 19840240), (10, 15872192), (14, 11337280), (16, 9920120), (20, 7936096), (28, 5668640), (32, 4960060), (35, 4534912), (40, 3968048), (56, 2834320), (64, 2480030), (70, 2267456), (71, 2235520), (80, 1984024), (112, 1417160), (128, 1240015), (140, 1133728), (142, 1117760), (160, 992012), (224, 708580), (280, 566864), (284, 558880), (320, 496006), (355, 447104), (448, 354290), (497, 319360), (499, 318080), (560, 283432), (568, 279440), (640, 248003), (710, 223552), (896, 177145), (994, 159680), (998, 159040), (1120, 141716), (1136, 139720), (1420, 111776), (1988, 79840), (1996, 79520), (2240, 70858), (2272, 69860), (2485, 63872), (2495, 63616), (2840, 55888), (3493, 45440), (3976, 39920), (3992, 39760), (4480, 35429), (4544, 34930), (4970, 31936), (4990, 31808), (5680, 27944), (6986, 22720), (7952, 19960), (7984, 19880), (9088, 17465), (9940, 15968), (9980, 15904), (11360, 13972)]