254164820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{389}}^1$

素因数の和:777

約数の個数: 96

約数和(自身を含む): 660441600

約数和(自身を除く): 406276780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 359, 364, 389, 455, 718, 778, 910, 1436, 1556, 1795, 1820, 1945, 2513, 2723, 3590, 3890, 4667, 5026, 5057, 5446, 7180, 7780, 9334, 10052, 10114, 10892, 12565, 13615, 18668, 20228, 23335, 25130, 25285, 27230, 32669, 35399, 46670, 50260, 50570, 54460, 65338, 70798, 93340, 101140, 130676, 139651, 141596, 163345, 176995, 279302, 326690, 353990, 558604, 653380, 698255, 707980, 977557, 1396510, 1815463, 1955114, 2793020, 3630926, 3910228, 4887785, 7261852, 9077315, 9775570, 12708241, 18154630, 19551140, 25416482, 36309260, 50832964, 63541205, 127082410, 254164820]

約数ペア:

[(1, 254164820), (2, 127082410), (4, 63541205), (5, 50832964), (7, 36309260), (10, 25416482), (13, 19551140), (14, 18154630), (20, 12708241), (26, 9775570), (28, 9077315), (35, 7261852), (52, 4887785), (65, 3910228), (70, 3630926), (91, 2793020), (130, 1955114), (140, 1815463), (182, 1396510), (260, 977557), (359, 707980), (364, 698255), (389, 653380), (455, 558604), (718, 353990), (778, 326690), (910, 279302), (1436, 176995), (1556, 163345), (1795, 141596), (1820, 139651), (1945, 130676), (2513, 101140), (2723, 93340), (3590, 70798), (3890, 65338), (4667, 54460), (5026, 50570), (5057, 50260), (5446, 46670), (7180, 35399), (7780, 32669), (9334, 27230), (10052, 25285), (10114, 25130), (10892, 23335), (12565, 20228), (13615, 18668)]