28816865

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{89}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 45152640

約数和(自身を除く): 16335775

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 89, 145, 203, 319, 385, 445, 623, 841, 979, 1015, 1595, 2233, 2581, 3115, 4205, 4895, 5887, 6853, 9251, 11165, 12905, 18067, 28391, 29435, 34265, 46255, 64757, 74849, 90335, 141955, 198737, 323785, 374245, 523943, 823339, 993685, 2619715, 4116695, 5763373, 28816865]

約数ペア:

[(1, 28816865), (5, 5763373), (7, 4116695), (11, 2619715), (29, 993685), (35, 823339), (55, 523943), (77, 374245), (89, 323785), (145, 198737), (203, 141955), (319, 90335), (385, 74849), (445, 64757), (623, 46255), (841, 34265), (979, 29435), (1015, 28391), (1595, 18067), (2233, 12905), (2581, 11165), (3115, 9251), (4205, 6853), (4895, 5887)]