638345680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1709}}^1$

素因数の和:1781

約数の個数: 160

約数和(自身を含む): 1832025600

約数和(自身を除く): 1193679920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 29, 35, 40, 46, 56, 58, 70, 80, 92, 112, 115, 116, 140, 145, 161, 184, 203, 230, 232, 280, 290, 322, 368, 406, 460, 464, 560, 580, 644, 667, 805, 812, 920, 1015, 1160, 1288, 1334, 1610, 1624, 1709, 1840, 2030, 2320, 2576, 2668, 3220, 3248, 3335, 3418, 4060, 4669, 5336, 6440, 6670, 6836, 8120, 8545, 9338, 10672, 11963, 12880, 13340, 13672, 16240, 17090, 18676, 23345, 23926, 26680, 27344, 34180, 37352, 39307, 46690, 47852, 49561, 53360, 59815, 68360, 74704, 78614, 93380, 95704, 99122, 119630, 136720, 157228, 186760, 191408, 196535, 198244, 239260, 247805, 275149, 314456, 346927, 373520, 393070, 396488, 478520, 495610, 550298, 628912, 693854, 786140, 792976, 957040, 991220, 1100596, 1139903, 1375745, 1387708, 1572280, 1734635, 1982440, 2201192, 2279806, 2751490, 2775416, 3144560, 3469270, 3964880, 4402384, 4559612, 5502980, 5550832, 5699515, 6938540, 7979321, 9119224, 11005960, 11399030, 13877080, 15958642, 18238448, 22011920, 22798060, 27754160, 31917284, 39896605, 45596120, 63834568, 79793210, 91192240, 127669136, 159586420, 319172840, 638345680]

約数ペア:

[(1, 638345680), (2, 319172840), (4, 159586420), (5, 127669136), (7, 91192240), (8, 79793210), (10, 63834568), (14, 45596120), (16, 39896605), (20, 31917284), (23, 27754160), (28, 22798060), (29, 22011920), (35, 18238448), (40, 15958642), (46, 13877080), (56, 11399030), (58, 11005960), (70, 9119224), (80, 7979321), (92, 6938540), (112, 5699515), (115, 5550832), (116, 5502980), (140, 4559612), (145, 4402384), (161, 3964880), (184, 3469270), (203, 3144560), (230, 2775416), (232, 2751490), (280, 2279806), (290, 2201192), (322, 1982440), (368, 1734635), (406, 1572280), (460, 1387708), (464, 1375745), (560, 1139903), (580, 1100596), (644, 991220), (667, 957040), (805, 792976), (812, 786140), (920, 693854), (1015, 628912), (1160, 550298), (1288, 495610), (1334, 478520), (1610, 396488), (1624, 393070), (1709, 373520), (1840, 346927), (2030, 314456), (2320, 275149), (2576, 247805), (2668, 239260), (3220, 198244), (3248, 196535), (3335, 191408), (3418, 186760), (4060, 157228), (4669, 136720), (5336, 119630), (6440, 99122), (6670, 95704), (6836, 93380), (8120, 78614), (8545, 74704), (9338, 68360), (10672, 59815), (11963, 53360), (12880, 49561), (13340, 47852), (13672, 46690), (16240, 39307), (17090, 37352), (18676, 34180), (23345, 27344), (23926, 26680)]