20195576380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{911}}^1\times {\mathrm{22621}}^1$

素因数の和:23555

約数の個数: 72

約数和(自身を含む): 49391246016

約数和(自身を除く): 29195669636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 911, 980, 1822, 3644, 4555, 6377, 9110, 12754, 18220, 22621, 25508, 31885, 44639, 45242, 63770, 89278, 90484, 113105, 127540, 158347, 178556, 223195, 226210, 316694, 446390, 452420, 633388, 791735, 892780, 1108429, 1583470, 2216858, 3166940, 4433716, 5542145, 11084290, 20607731, 22168580, 41215462, 82430924, 103038655, 144254117, 206077310, 288508234, 412154620, 577016468, 721270585, 1009778819, 1442541170, 2019557638, 2885082340, 4039115276, 5048894095, 10097788190, 20195576380]

約数ペア:

[(1, 20195576380), (2, 10097788190), (4, 5048894095), (5, 4039115276), (7, 2885082340), (10, 2019557638), (14, 1442541170), (20, 1009778819), (28, 721270585), (35, 577016468), (49, 412154620), (70, 288508234), (98, 206077310), (140, 144254117), (196, 103038655), (245, 82430924), (490, 41215462), (911, 22168580), (980, 20607731), (1822, 11084290), (3644, 5542145), (4555, 4433716), (6377, 3166940), (9110, 2216858), (12754, 1583470), (18220, 1108429), (22621, 892780), (25508, 791735), (31885, 633388), (44639, 452420), (45242, 446390), (63770, 316694), (89278, 226210), (90484, 223195), (113105, 178556), (127540, 158347)]