20512201990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{61991}}^1$

素因数の和:62197

約数の個数: 64

約数和(自身を含む): 43920092160

約数和(自身を除く): 23407890170

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 163, 203, 290, 326, 406, 815, 1015, 1141, 1630, 2030, 2282, 4727, 5705, 9454, 11410, 23635, 33089, 47270, 61991, 66178, 123982, 165445, 309955, 330890, 433937, 619910, 867874, 1797739, 2169685, 3595478, 4339370, 8988695, 10104533, 12584173, 17977390, 20209066, 25168346, 50522665, 62920865, 70731731, 101045330, 125841730, 141463462, 293031457, 353658655, 586062914, 707317310, 1465157285, 2051220199, 2930314570, 4102440398, 10256100995, 20512201990]

約数ペア:

[(1, 20512201990), (2, 10256100995), (5, 4102440398), (7, 2930314570), (10, 2051220199), (14, 1465157285), (29, 707317310), (35, 586062914), (58, 353658655), (70, 293031457), (145, 141463462), (163, 125841730), (203, 101045330), (290, 70731731), (326, 62920865), (406, 50522665), (815, 25168346), (1015, 20209066), (1141, 17977390), (1630, 12584173), (2030, 10104533), (2282, 8988695), (4727, 4339370), (5705, 3595478), (9454, 2169685), (11410, 1797739), (23635, 867874), (33089, 619910), (47270, 433937), (61991, 330890), (66178, 309955), (123982, 165445)]