19685120

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^3$

素因数の和:67

約数の個数: 144

約数和(自身を含む): 58376640

約数和(自身を除く): 38691520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 169, 182, 208, 224, 256, 260, 280, 320, 338, 364, 416, 448, 455, 520, 560, 640, 676, 728, 832, 845, 896, 910, 1040, 1120, 1183, 1280, 1352, 1456, 1664, 1690, 1792, 1820, 2080, 2197, 2240, 2366, 2704, 2912, 3328, 3380, 3640, 4160, 4394, 4480, 4732, 5408, 5824, 5915, 6760, 7280, 8320, 8788, 8960, 9464, 10816, 10985, 11648, 11830, 13520, 14560, 15379, 16640, 17576, 18928, 21632, 21970, 23296, 23660, 27040, 29120, 30758, 35152, 37856, 43264, 43940, 47320, 54080, 58240, 61516, 70304, 75712, 76895, 87880, 94640, 108160, 116480, 123032, 140608, 151424, 153790, 175760, 189280, 216320, 246064, 281216, 302848, 307580, 351520, 378560, 492128, 562432, 615160, 703040, 757120, 984256, 1230320, 1406080, 1514240, 1968512, 2460640, 2812160, 3937024, 4921280, 9842560, 19685120]

約数ペア:

[(1, 19685120), (2, 9842560), (4, 4921280), (5, 3937024), (7, 2812160), (8, 2460640), (10, 1968512), (13, 1514240), (14, 1406080), (16, 1230320), (20, 984256), (26, 757120), (28, 703040), (32, 615160), (35, 562432), (40, 492128), (52, 378560), (56, 351520), (64, 307580), (65, 302848), (70, 281216), (80, 246064), (91, 216320), (104, 189280), (112, 175760), (128, 153790), (130, 151424), (140, 140608), (160, 123032), (169, 116480), (182, 108160), (208, 94640), (224, 87880), (256, 76895), (260, 75712), (280, 70304), (320, 61516), (338, 58240), (364, 54080), (416, 47320), (448, 43940), (455, 43264), (520, 37856), (560, 35152), (640, 30758), (676, 29120), (728, 27040), (832, 23660), (845, 23296), (896, 21970), (910, 21632), (1040, 18928), (1120, 17576), (1183, 16640), (1280, 15379), (1352, 14560), (1456, 13520), (1664, 11830), (1690, 11648), (1792, 10985), (1820, 10816), (2080, 9464), (2197, 8960), (2240, 8788), (2366, 8320), (2704, 7280), (2912, 6760), (3328, 5915), (3380, 5824), (3640, 5408), (4160, 4732), (4394, 4480)]