40001280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{947}}^1$

素因数の和:982

約数の個数: 144

約数和(自身を含む): 139515264

約数和(自身を除く): 99513984

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, 256, 264, 320, 330, 352, 384, 440, 480, 528, 640, 660, 704, 768, 880, 947, 960, 1056, 1280, 1320, 1408, 1760, 1894, 1920, 2112, 2640, 2816, 2841, 3520, 3788, 3840, 4224, 4735, 5280, 5682, 7040, 7576, 8448, 9470, 10417, 10560, 11364, 14080, 14205, 15152, 18940, 20834, 21120, 22728, 28410, 30304, 31251, 37880, 41668, 42240, 45456, 52085, 56820, 60608, 62502, 75760, 83336, 90912, 104170, 113640, 121216, 125004, 151520, 156255, 166672, 181824, 208340, 227280, 242432, 250008, 303040, 312510, 333344, 363648, 416680, 454560, 500016, 606080, 625020, 666688, 727296, 833360, 909120, 1000032, 1212160, 1250040, 1333376, 1666720, 1818240, 2000064, 2500080, 2666752, 3333440, 3636480, 4000128, 5000160, 6666880, 8000256, 10000320, 13333760, 20000640, 40001280]

約数ペア:

[(1, 40001280), (2, 20000640), (3, 13333760), (4, 10000320), (5, 8000256), (6, 6666880), (8, 5000160), (10, 4000128), (11, 3636480), (12, 3333440), (15, 2666752), (16, 2500080), (20, 2000064), (22, 1818240), (24, 1666720), (30, 1333376), (32, 1250040), (33, 1212160), (40, 1000032), (44, 909120), (48, 833360), (55, 727296), (60, 666688), (64, 625020), (66, 606080), (80, 500016), (88, 454560), (96, 416680), (110, 363648), (120, 333344), (128, 312510), (132, 303040), (160, 250008), (165, 242432), (176, 227280), (192, 208340), (220, 181824), (240, 166672), (256, 156255), (264, 151520), (320, 125004), (330, 121216), (352, 113640), (384, 104170), (440, 90912), (480, 83336), (528, 75760), (640, 62502), (660, 60608), (704, 56820), (768, 52085), (880, 45456), (947, 42240), (960, 41668), (1056, 37880), (1280, 31251), (1320, 30304), (1408, 28410), (1760, 22728), (1894, 21120), (1920, 20834), (2112, 18940), (2640, 15152), (2816, 14205), (2841, 14080), (3520, 11364), (3788, 10560), (3840, 10417), (4224, 9470), (4735, 8448), (5280, 7576), (5682, 7040)]