16561998

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{443}}^1$

素因数の和:549

約数の個数: 48

約数和(自身を含む): 37679616

約数和(自身を除く): 21117618

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 67, 93, 134, 186, 201, 279, 402, 443, 558, 603, 886, 1206, 1329, 2077, 2658, 3987, 4154, 6231, 7974, 12462, 13733, 18693, 27466, 29681, 37386, 41199, 59362, 82398, 89043, 123597, 178086, 247194, 267129, 534258, 920111, 1840222, 2760333, 5520666, 8280999, 16561998]

約数ペア:

[(1, 16561998), (2, 8280999), (3, 5520666), (6, 2760333), (9, 1840222), (18, 920111), (31, 534258), (62, 267129), (67, 247194), (93, 178086), (134, 123597), (186, 89043), (201, 82398), (279, 59362), (402, 41199), (443, 37386), (558, 29681), (603, 27466), (886, 18693), (1206, 13733), (1329, 12462), (2077, 7974), (2658, 6231), (3987, 4154)]