20590190080

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{259453}}^1$

素因数の和:259507

約数の個数: 80

約数和(自身を含む): 50960916864

約数和(自身を除く): 30370726784

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, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 7936, 9920, 15872, 19840, 39680, 79360, 259453, 518906, 1037812, 1297265, 2075624, 2594530, 4151248, 5189060, 8043043, 8302496, 10378120, 16086086, 16604992, 20756240, 32172172, 33209984, 40215215, 41512480, 64344344, 66419968, 80430430, 83024960, 128688688, 132839936, 160860860, 166049920, 257377376, 321721720, 332099840, 514754752, 643443440, 664199680, 1029509504, 1286886880, 2059019008, 2573773760, 4118038016, 5147547520, 10295095040, 20590190080]

約数ペア:

[(1, 20590190080), (2, 10295095040), (4, 5147547520), (5, 4118038016), (8, 2573773760), (10, 2059019008), (16, 1286886880), (20, 1029509504), (31, 664199680), (32, 643443440), (40, 514754752), (62, 332099840), (64, 321721720), (80, 257377376), (124, 166049920), (128, 160860860), (155, 132839936), (160, 128688688), (248, 83024960), (256, 80430430), (310, 66419968), (320, 64344344), (496, 41512480), (512, 40215215), (620, 33209984), (640, 32172172), (992, 20756240), (1240, 16604992), (1280, 16086086), (1984, 10378120), (2480, 8302496), (2560, 8043043), (3968, 5189060), (4960, 4151248), (7936, 2594530), (9920, 2075624), (15872, 1297265), (19840, 1037812), (39680, 518906), (79360, 259453)]