20000640

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{947}}^1$

素因数の和:980

約数の個数: 128

約数和(自身を含む): 69621120

約数和(自身を除く): 49620480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 128, 132, 160, 165, 176, 192, 220, 240, 264, 320, 330, 352, 384, 440, 480, 528, 640, 660, 704, 880, 947, 960, 1056, 1320, 1408, 1760, 1894, 1920, 2112, 2640, 2841, 3520, 3788, 4224, 4735, 5280, 5682, 7040, 7576, 9470, 10417, 10560, 11364, 14205, 15152, 18940, 20834, 21120, 22728, 28410, 30304, 31251, 37880, 41668, 45456, 52085, 56820, 60608, 62502, 75760, 83336, 90912, 104170, 113640, 121216, 125004, 151520, 156255, 166672, 181824, 208340, 227280, 250008, 303040, 312510, 333344, 363648, 416680, 454560, 500016, 606080, 625020, 666688, 833360, 909120, 1000032, 1250040, 1333376, 1666720, 1818240, 2000064, 2500080, 3333440, 4000128, 5000160, 6666880, 10000320, 20000640]

約数ペア:

[(1, 20000640), (2, 10000320), (3, 6666880), (4, 5000160), (5, 4000128), (6, 3333440), (8, 2500080), (10, 2000064), (11, 1818240), (12, 1666720), (15, 1333376), (16, 1250040), (20, 1000032), (22, 909120), (24, 833360), (30, 666688), (32, 625020), (33, 606080), (40, 500016), (44, 454560), (48, 416680), (55, 363648), (60, 333344), (64, 312510), (66, 303040), (80, 250008), (88, 227280), (96, 208340), (110, 181824), (120, 166672), (128, 156255), (132, 151520), (160, 125004), (165, 121216), (176, 113640), (192, 104170), (220, 90912), (240, 83336), (264, 75760), (320, 62502), (330, 60608), (352, 56820), (384, 52085), (440, 45456), (480, 41668), (528, 37880), (640, 31251), (660, 30304), (704, 28410), (880, 22728), (947, 21120), (960, 20834), (1056, 18940), (1320, 15152), (1408, 14205), (1760, 11364), (1894, 10560), (1920, 10417), (2112, 9470), (2640, 7576), (2841, 7040), (3520, 5682), (3788, 5280), (4224, 4735)]