161954920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:263

約数の個数: 128

約数和(自身を含む): 408512160

約数和(自身を除く): 246557240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 37, 40, 41, 68, 74, 82, 85, 136, 148, 157, 164, 170, 185, 205, 296, 314, 328, 340, 370, 410, 628, 629, 680, 697, 740, 785, 820, 1256, 1258, 1394, 1480, 1517, 1570, 1640, 2516, 2669, 2788, 3034, 3140, 3145, 3485, 5032, 5338, 5576, 5809, 6068, 6280, 6290, 6437, 6970, 7585, 10676, 11618, 12136, 12580, 12874, 13345, 13940, 15170, 21352, 23236, 25160, 25748, 25789, 26690, 27880, 29045, 30340, 32185, 46472, 51496, 51578, 53380, 58090, 60680, 64370, 98753, 103156, 106760, 109429, 116180, 128740, 128945, 197506, 206312, 218858, 232360, 238169, 257480, 257890, 395012, 437716, 476338, 493765, 515780, 547145, 790024, 875432, 952676, 987530, 1031560, 1094290, 1190845, 1905352, 1975060, 2188580, 2381690, 3950120, 4048873, 4377160, 4763380, 8097746, 9526760, 16195492, 20244365, 32390984, 40488730, 80977460, 161954920]

約数ペア:

[(1, 161954920), (2, 80977460), (4, 40488730), (5, 32390984), (8, 20244365), (10, 16195492), (17, 9526760), (20, 8097746), (34, 4763380), (37, 4377160), (40, 4048873), (41, 3950120), (68, 2381690), (74, 2188580), (82, 1975060), (85, 1905352), (136, 1190845), (148, 1094290), (157, 1031560), (164, 987530), (170, 952676), (185, 875432), (205, 790024), (296, 547145), (314, 515780), (328, 493765), (340, 476338), (370, 437716), (410, 395012), (628, 257890), (629, 257480), (680, 238169), (697, 232360), (740, 218858), (785, 206312), (820, 197506), (1256, 128945), (1258, 128740), (1394, 116180), (1480, 109429), (1517, 106760), (1570, 103156), (1640, 98753), (2516, 64370), (2669, 60680), (2788, 58090), (3034, 53380), (3140, 51578), (3145, 51496), (3485, 46472), (5032, 32185), (5338, 30340), (5576, 29045), (5809, 27880), (6068, 26690), (6280, 25789), (6290, 25748), (6437, 25160), (6970, 23236), (7585, 21352), (10676, 15170), (11618, 13940), (12136, 13345), (12580, 12874)]