21752080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:237

約数の個数: 120

約数和(自身を含む): 61067520

約数和(自身を除く): 39315440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 179, 196, 217, 245, 248, 280, 310, 358, 392, 434, 490, 496, 560, 620, 716, 784, 868, 895, 980, 1085, 1240, 1253, 1432, 1519, 1736, 1790, 1960, 2170, 2480, 2506, 2864, 3038, 3472, 3580, 3920, 4340, 5012, 5549, 6076, 6265, 7160, 7595, 8680, 8771, 10024, 11098, 12152, 12530, 14320, 15190, 17360, 17542, 20048, 22196, 24304, 25060, 27745, 30380, 35084, 38843, 43855, 44392, 50120, 55490, 60760, 70168, 77686, 87710, 88784, 100240, 110980, 121520, 140336, 155372, 175420, 194215, 221960, 271901, 310744, 350840, 388430, 443920, 543802, 621488, 701680, 776860, 1087604, 1359505, 1553720, 2175208, 2719010, 3107440, 4350416, 5438020, 10876040, 21752080]

約数ペア:

[(1, 21752080), (2, 10876040), (4, 5438020), (5, 4350416), (7, 3107440), (8, 2719010), (10, 2175208), (14, 1553720), (16, 1359505), (20, 1087604), (28, 776860), (31, 701680), (35, 621488), (40, 543802), (49, 443920), (56, 388430), (62, 350840), (70, 310744), (80, 271901), (98, 221960), (112, 194215), (124, 175420), (140, 155372), (155, 140336), (179, 121520), (196, 110980), (217, 100240), (245, 88784), (248, 87710), (280, 77686), (310, 70168), (358, 60760), (392, 55490), (434, 50120), (490, 44392), (496, 43855), (560, 38843), (620, 35084), (716, 30380), (784, 27745), (868, 25060), (895, 24304), (980, 22196), (1085, 20048), (1240, 17542), (1253, 17360), (1432, 15190), (1519, 14320), (1736, 12530), (1790, 12152), (1960, 11098), (2170, 10024), (2480, 8771), (2506, 8680), (2864, 7595), (3038, 7160), (3472, 6265), (3580, 6076), (3920, 5549), (4340, 5012)]