128418560

素因数分解:

$2^8\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2447}}^1$

素因数の和:2509

約数の個数: 72

約数和(自身を含む): 315233856

約数和(自身を除く): 186815296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 256, 320, 328, 410, 640, 656, 820, 1280, 1312, 1640, 2447, 2624, 3280, 4894, 5248, 6560, 9788, 10496, 12235, 13120, 19576, 24470, 26240, 39152, 48940, 52480, 78304, 97880, 100327, 156608, 195760, 200654, 313216, 391520, 401308, 501635, 626432, 783040, 802616, 1003270, 1566080, 1605232, 2006540, 3132160, 3210464, 4013080, 6420928, 8026160, 12841856, 16052320, 25683712, 32104640, 64209280, 128418560]

約数ペア:

[(1, 128418560), (2, 64209280), (4, 32104640), (5, 25683712), (8, 16052320), (10, 12841856), (16, 8026160), (20, 6420928), (32, 4013080), (40, 3210464), (41, 3132160), (64, 2006540), (80, 1605232), (82, 1566080), (128, 1003270), (160, 802616), (164, 783040), (205, 626432), (256, 501635), (320, 401308), (328, 391520), (410, 313216), (640, 200654), (656, 195760), (820, 156608), (1280, 100327), (1312, 97880), (1640, 78304), (2447, 52480), (2624, 48940), (3280, 39152), (4894, 26240), (5248, 24470), (6560, 19576), (9788, 13120), (10496, 12235)]