18736640

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{563}}^1$

素因数の和:599

約数の個数: 80

約数和(自身を含む): 48465648

約数和(自身を除く): 29729008

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 563, 640, 832, 1040, 1126, 1280, 1664, 2080, 2252, 2560, 2815, 3328, 4160, 4504, 5630, 6656, 7319, 8320, 9008, 11260, 14638, 16640, 18016, 22520, 29276, 33280, 36032, 36595, 45040, 58552, 72064, 73190, 90080, 117104, 144128, 146380, 180160, 234208, 288256, 292760, 360320, 468416, 585520, 720640, 936832, 1171040, 1441280, 1873664, 2342080, 3747328, 4684160, 9368320, 18736640]

約数ペア:

[(1, 18736640), (2, 9368320), (4, 4684160), (5, 3747328), (8, 2342080), (10, 1873664), (13, 1441280), (16, 1171040), (20, 936832), (26, 720640), (32, 585520), (40, 468416), (52, 360320), (64, 292760), (65, 288256), (80, 234208), (104, 180160), (128, 146380), (130, 144128), (160, 117104), (208, 90080), (256, 73190), (260, 72064), (320, 58552), (416, 45040), (512, 36595), (520, 36032), (563, 33280), (640, 29276), (832, 22520), (1040, 18016), (1126, 16640), (1280, 14638), (1664, 11260), (2080, 9008), (2252, 8320), (2560, 7319), (2815, 6656), (3328, 5630), (4160, 4504)]