21100400

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 56045520

約数和(自身を除く): 34945120

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 29, 34, 40, 50, 58, 68, 80, 85, 100, 107, 116, 136, 145, 170, 200, 214, 232, 272, 290, 340, 400, 425, 428, 464, 493, 535, 580, 680, 725, 850, 856, 986, 1070, 1160, 1360, 1450, 1700, 1712, 1819, 1972, 2140, 2320, 2465, 2675, 2900, 3103, 3400, 3638, 3944, 4280, 4930, 5350, 5800, 6206, 6800, 7276, 7888, 8560, 9095, 9860, 10700, 11600, 12325, 12412, 14552, 15515, 18190, 19720, 21400, 24650, 24824, 29104, 31030, 36380, 39440, 42800, 45475, 49300, 49648, 52751, 62060, 72760, 77575, 90950, 98600, 105502, 124120, 145520, 155150, 181900, 197200, 211004, 248240, 263755, 310300, 363800, 422008, 527510, 620600, 727600, 844016, 1055020, 1241200, 1318775, 2110040, 2637550, 4220080, 5275100, 10550200, 21100400]

約数ペア:

[(1, 21100400), (2, 10550200), (4, 5275100), (5, 4220080), (8, 2637550), (10, 2110040), (16, 1318775), (17, 1241200), (20, 1055020), (25, 844016), (29, 727600), (34, 620600), (40, 527510), (50, 422008), (58, 363800), (68, 310300), (80, 263755), (85, 248240), (100, 211004), (107, 197200), (116, 181900), (136, 155150), (145, 145520), (170, 124120), (200, 105502), (214, 98600), (232, 90950), (272, 77575), (290, 72760), (340, 62060), (400, 52751), (425, 49648), (428, 49300), (464, 45475), (493, 42800), (535, 39440), (580, 36380), (680, 31030), (725, 29104), (850, 24824), (856, 24650), (986, 21400), (1070, 19720), (1160, 18190), (1360, 15515), (1450, 14552), (1700, 12412), (1712, 12325), (1819, 11600), (1972, 10700), (2140, 9860), (2320, 9095), (2465, 8560), (2675, 7888), (2900, 7276), (3103, 6800), (3400, 6206), (3638, 5800), (3944, 5350), (4280, 4930)]