20536880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:84

約数の個数: 180

約数和(自身を含む): 62085312

約数和(自身を除く): 41548432

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 31, 35, 40, 49, 52, 56, 62, 65, 70, 80, 91, 98, 104, 112, 124, 130, 140, 155, 169, 182, 196, 208, 217, 245, 248, 260, 280, 310, 338, 364, 392, 403, 434, 455, 490, 496, 520, 560, 620, 637, 676, 728, 784, 806, 845, 868, 910, 980, 1040, 1085, 1183, 1240, 1274, 1352, 1456, 1519, 1612, 1690, 1736, 1820, 1960, 2015, 2170, 2366, 2480, 2548, 2704, 2821, 3038, 3185, 3224, 3380, 3472, 3640, 3920, 4030, 4340, 4732, 5096, 5239, 5642, 5915, 6076, 6370, 6448, 6760, 7280, 7595, 8060, 8281, 8680, 9464, 10192, 10478, 11284, 11830, 12152, 12740, 13520, 14105, 15190, 16120, 16562, 17360, 18928, 19747, 20956, 22568, 23660, 24304, 25480, 26195, 28210, 30380, 32240, 33124, 36673, 39494, 41405, 41912, 45136, 47320, 50960, 52390, 56420, 60760, 66248, 73346, 78988, 82810, 83824, 94640, 98735, 104780, 112840, 121520, 132496, 146692, 157976, 165620, 183365, 197470, 209560, 225680, 256711, 293384, 315952, 331240, 366730, 394940, 419120, 513422, 586768, 662480, 733460, 789880, 1026844, 1283555, 1466920, 1579760, 2053688, 2567110, 2933840, 4107376, 5134220, 10268440, 20536880]

約数ペア:

[(1, 20536880), (2, 10268440), (4, 5134220), (5, 4107376), (7, 2933840), (8, 2567110), (10, 2053688), (13, 1579760), (14, 1466920), (16, 1283555), (20, 1026844), (26, 789880), (28, 733460), (31, 662480), (35, 586768), (40, 513422), (49, 419120), (52, 394940), (56, 366730), (62, 331240), (65, 315952), (70, 293384), (80, 256711), (91, 225680), (98, 209560), (104, 197470), (112, 183365), (124, 165620), (130, 157976), (140, 146692), (155, 132496), (169, 121520), (182, 112840), (196, 104780), (208, 98735), (217, 94640), (245, 83824), (248, 82810), (260, 78988), (280, 73346), (310, 66248), (338, 60760), (364, 56420), (392, 52390), (403, 50960), (434, 47320), (455, 45136), (490, 41912), (496, 41405), (520, 39494), (560, 36673), (620, 33124), (637, 32240), (676, 30380), (728, 28210), (784, 26195), (806, 25480), (845, 24304), (868, 23660), (910, 22568), (980, 20956), (1040, 19747), (1085, 18928), (1183, 17360), (1240, 16562), (1274, 16120), (1352, 15190), (1456, 14105), (1519, 13520), (1612, 12740), (1690, 12152), (1736, 11830), (1820, 11284), (1960, 10478), (2015, 10192), (2170, 9464), (2366, 8680), (2480, 8281), (2548, 8060), (2704, 7595), (2821, 7280), (3038, 6760), (3185, 6448), (3224, 6370), (3380, 6076), (3472, 5915), (3640, 5642), (3920, 5239), (4030, 5096), (4340, 4732)]