81744460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:503

約数の個数: 96

約数和(自身を含む): 209664000

約数和(自身を除く): 127919540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 79, 95, 133, 140, 158, 190, 266, 316, 380, 389, 395, 532, 553, 665, 778, 790, 1106, 1330, 1501, 1556, 1580, 1945, 2212, 2660, 2723, 2765, 3002, 3890, 5446, 5530, 6004, 7391, 7505, 7780, 10507, 10892, 11060, 13615, 14782, 15010, 21014, 27230, 29564, 30020, 30731, 36955, 42028, 51737, 52535, 54460, 61462, 73910, 103474, 105070, 122924, 147820, 153655, 206948, 210140, 215117, 258685, 307310, 430234, 517370, 583889, 614620, 860468, 1034740, 1075585, 1167778, 2151170, 2335556, 2919445, 4087223, 4302340, 5838890, 8174446, 11677780, 16348892, 20436115, 40872230, 81744460]

約数ペア:

[(1, 81744460), (2, 40872230), (4, 20436115), (5, 16348892), (7, 11677780), (10, 8174446), (14, 5838890), (19, 4302340), (20, 4087223), (28, 2919445), (35, 2335556), (38, 2151170), (70, 1167778), (76, 1075585), (79, 1034740), (95, 860468), (133, 614620), (140, 583889), (158, 517370), (190, 430234), (266, 307310), (316, 258685), (380, 215117), (389, 210140), (395, 206948), (532, 153655), (553, 147820), (665, 122924), (778, 105070), (790, 103474), (1106, 73910), (1330, 61462), (1501, 54460), (1556, 52535), (1580, 51737), (1945, 42028), (2212, 36955), (2660, 30731), (2723, 30020), (2765, 29564), (3002, 27230), (3890, 21014), (5446, 15010), (5530, 14782), (6004, 13615), (7391, 11060), (7505, 10892), (7780, 10507)]