12968636720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{402253}}^1$

素因数の和:402310

約数の個数: 80

約数和(自身を含む): 33519021312

約数和(自身を除く): 20550384592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 16120, 32240, 402253, 804506, 1609012, 2011265, 3218024, 4022530, 5229289, 6436048, 8045060, 10458578, 12469843, 16090120, 20917156, 24939686, 26146445, 32180240, 41834312, 49879372, 52292890, 62349215, 83668624, 99758744, 104585780, 124698430, 162107959, 199517488, 209171560, 249396860, 324215918, 418343120, 498793720, 648431836, 810539795, 997587440, 1296863672, 1621079590, 2593727344, 3242159180, 6484318360, 12968636720]

約数ペア:

[(1, 12968636720), (2, 6484318360), (4, 3242159180), (5, 2593727344), (8, 1621079590), (10, 1296863672), (13, 997587440), (16, 810539795), (20, 648431836), (26, 498793720), (31, 418343120), (40, 324215918), (52, 249396860), (62, 209171560), (65, 199517488), (80, 162107959), (104, 124698430), (124, 104585780), (130, 99758744), (155, 83668624), (208, 62349215), (248, 52292890), (260, 49879372), (310, 41834312), (403, 32180240), (496, 26146445), (520, 24939686), (620, 20917156), (806, 16090120), (1040, 12469843), (1240, 10458578), (1612, 8045060), (2015, 6436048), (2480, 5229289), (3224, 4022530), (4030, 3218024), (6448, 2011265), (8060, 1609012), (16120, 804506), (32240, 402253)]