20172320

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:143

約数の個数: 144

約数和(自身を含む): 57915648

約数和(自身を除く): 37743328

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 83, 98, 112, 124, 140, 155, 160, 166, 196, 217, 224, 245, 248, 280, 310, 332, 392, 415, 434, 490, 496, 560, 581, 620, 664, 784, 830, 868, 980, 992, 1085, 1120, 1162, 1240, 1328, 1519, 1568, 1660, 1736, 1960, 2170, 2324, 2480, 2573, 2656, 2905, 3038, 3320, 3472, 3920, 4067, 4340, 4648, 4960, 5146, 5810, 6076, 6640, 6944, 7595, 7840, 8134, 8680, 9296, 10292, 11620, 12152, 12865, 13280, 15190, 16268, 17360, 18011, 18592, 20335, 20584, 23240, 24304, 25730, 30380, 32536, 34720, 36022, 40670, 41168, 46480, 48608, 51460, 60760, 65072, 72044, 81340, 82336, 90055, 92960, 102920, 121520, 126077, 130144, 144088, 162680, 180110, 205840, 243040, 252154, 288176, 325360, 360220, 411680, 504308, 576352, 630385, 650720, 720440, 1008616, 1260770, 1440880, 2017232, 2521540, 2881760, 4034464, 5043080, 10086160, 20172320]

約数ペア:

[(1, 20172320), (2, 10086160), (4, 5043080), (5, 4034464), (7, 2881760), (8, 2521540), (10, 2017232), (14, 1440880), (16, 1260770), (20, 1008616), (28, 720440), (31, 650720), (32, 630385), (35, 576352), (40, 504308), (49, 411680), (56, 360220), (62, 325360), (70, 288176), (80, 252154), (83, 243040), (98, 205840), (112, 180110), (124, 162680), (140, 144088), (155, 130144), (160, 126077), (166, 121520), (196, 102920), (217, 92960), (224, 90055), (245, 82336), (248, 81340), (280, 72044), (310, 65072), (332, 60760), (392, 51460), (415, 48608), (434, 46480), (490, 41168), (496, 40670), (560, 36022), (581, 34720), (620, 32536), (664, 30380), (784, 25730), (830, 24304), (868, 23240), (980, 20584), (992, 20335), (1085, 18592), (1120, 18011), (1162, 17360), (1240, 16268), (1328, 15190), (1519, 13280), (1568, 12865), (1660, 12152), (1736, 11620), (1960, 10292), (2170, 9296), (2324, 8680), (2480, 8134), (2573, 7840), (2656, 7595), (2905, 6944), (3038, 6640), (3320, 6076), (3472, 5810), (3920, 5146), (4067, 4960), (4340, 4648)]