51784180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{997}}^1$

素因数の和:1073

約数の個数: 72

約数和(自身を含む): 129017448

約数和(自身を除く): 77233268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 196, 212, 245, 265, 371, 490, 530, 742, 980, 997, 1060, 1484, 1855, 1994, 2597, 3710, 3988, 4985, 5194, 6979, 7420, 9970, 10388, 12985, 13958, 19940, 25970, 27916, 34895, 48853, 51940, 52841, 69790, 97706, 105682, 139580, 195412, 211364, 244265, 264205, 369887, 488530, 528410, 739774, 977060, 1056820, 1479548, 1849435, 2589209, 3698870, 5178418, 7397740, 10356836, 12946045, 25892090, 51784180]

約数ペア:

[(1, 51784180), (2, 25892090), (4, 12946045), (5, 10356836), (7, 7397740), (10, 5178418), (14, 3698870), (20, 2589209), (28, 1849435), (35, 1479548), (49, 1056820), (53, 977060), (70, 739774), (98, 528410), (106, 488530), (140, 369887), (196, 264205), (212, 244265), (245, 211364), (265, 195412), (371, 139580), (490, 105682), (530, 97706), (742, 69790), (980, 52841), (997, 51940), (1060, 48853), (1484, 34895), (1855, 27916), (1994, 25970), (2597, 19940), (3710, 13958), (3988, 12985), (4985, 10388), (5194, 9970), (6979, 7420)]