18691400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 54460800

約数和(自身を除く): 35769400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 25, 26, 28, 35, 40, 50, 52, 56, 65, 70, 79, 91, 100, 104, 130, 140, 158, 169, 175, 182, 200, 260, 280, 316, 325, 338, 350, 364, 395, 455, 520, 553, 632, 650, 676, 700, 728, 790, 845, 910, 1027, 1106, 1183, 1300, 1352, 1400, 1580, 1690, 1820, 1975, 2054, 2212, 2275, 2366, 2600, 2765, 3160, 3380, 3640, 3950, 4108, 4225, 4424, 4550, 4732, 5135, 5530, 5915, 6760, 7189, 7900, 8216, 8450, 9100, 9464, 10270, 11060, 11830, 13351, 13825, 14378, 15800, 16900, 18200, 20540, 22120, 23660, 25675, 26702, 27650, 28756, 29575, 33800, 35945, 41080, 47320, 51350, 53404, 55300, 57512, 59150, 66755, 71890, 93457, 102700, 106808, 110600, 118300, 133510, 143780, 179725, 186914, 205400, 236600, 267020, 287560, 333775, 359450, 373828, 467285, 534040, 667550, 718900, 747656, 934570, 1335100, 1437800, 1869140, 2336425, 2670200, 3738280, 4672850, 9345700, 18691400]

約数ペア:

[(1, 18691400), (2, 9345700), (4, 4672850), (5, 3738280), (7, 2670200), (8, 2336425), (10, 1869140), (13, 1437800), (14, 1335100), (20, 934570), (25, 747656), (26, 718900), (28, 667550), (35, 534040), (40, 467285), (50, 373828), (52, 359450), (56, 333775), (65, 287560), (70, 267020), (79, 236600), (91, 205400), (100, 186914), (104, 179725), (130, 143780), (140, 133510), (158, 118300), (169, 110600), (175, 106808), (182, 102700), (200, 93457), (260, 71890), (280, 66755), (316, 59150), (325, 57512), (338, 55300), (350, 53404), (364, 51350), (395, 47320), (455, 41080), (520, 35945), (553, 33800), (632, 29575), (650, 28756), (676, 27650), (700, 26702), (728, 25675), (790, 23660), (845, 22120), (910, 20540), (1027, 18200), (1106, 16900), (1183, 15800), (1300, 14378), (1352, 13825), (1400, 13351), (1580, 11830), (1690, 11060), (1820, 10270), (1975, 9464), (2054, 9100), (2212, 8450), (2275, 8216), (2366, 7900), (2600, 7189), (2765, 6760), (3160, 5915), (3380, 5530), (3640, 5135), (3950, 4732), (4108, 4550), (4225, 4424)]