19000520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:259

約数の個数: 128

約数和(自身を含む): 55296000

約数和(自身を除く): 36295480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 88, 110, 124, 140, 154, 155, 199, 217, 220, 248, 280, 308, 310, 341, 385, 398, 434, 440, 616, 620, 682, 770, 796, 868, 995, 1085, 1240, 1364, 1393, 1540, 1592, 1705, 1736, 1990, 2170, 2189, 2387, 2728, 2786, 3080, 3410, 3980, 4340, 4378, 4774, 5572, 6169, 6820, 6965, 7960, 8680, 8756, 9548, 10945, 11144, 11935, 12338, 13640, 13930, 15323, 17512, 19096, 21890, 23870, 24676, 27860, 30646, 30845, 43183, 43780, 47740, 49352, 55720, 61292, 61690, 67859, 76615, 86366, 87560, 95480, 122584, 123380, 135718, 153230, 172732, 215915, 246760, 271436, 306460, 339295, 345464, 431830, 475013, 542872, 612920, 678590, 863660, 950026, 1357180, 1727320, 1900052, 2375065, 2714360, 3800104, 4750130, 9500260, 19000520]

約数ペア:

[(1, 19000520), (2, 9500260), (4, 4750130), (5, 3800104), (7, 2714360), (8, 2375065), (10, 1900052), (11, 1727320), (14, 1357180), (20, 950026), (22, 863660), (28, 678590), (31, 612920), (35, 542872), (40, 475013), (44, 431830), (55, 345464), (56, 339295), (62, 306460), (70, 271436), (77, 246760), (88, 215915), (110, 172732), (124, 153230), (140, 135718), (154, 123380), (155, 122584), (199, 95480), (217, 87560), (220, 86366), (248, 76615), (280, 67859), (308, 61690), (310, 61292), (341, 55720), (385, 49352), (398, 47740), (434, 43780), (440, 43183), (616, 30845), (620, 30646), (682, 27860), (770, 24676), (796, 23870), (868, 21890), (995, 19096), (1085, 17512), (1240, 15323), (1364, 13930), (1393, 13640), (1540, 12338), (1592, 11935), (1705, 11144), (1736, 10945), (1990, 9548), (2170, 8756), (2189, 8680), (2387, 7960), (2728, 6965), (2786, 6820), (3080, 6169), (3410, 5572), (3980, 4774), (4340, 4378)]