15720813

素因数分解:

$3^2\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:162

約数の個数: 36

約数和(自身を含む): 24638848

約数和(自身を除く): 8918035

約数列:

[1, 3, 9, 29, 31, 67, 87, 93, 201, 261, 279, 603, 841, 899, 1943, 2077, 2523, 2697, 5829, 6231, 7569, 8091, 17487, 18693, 26071, 56347, 60233, 78213, 169041, 180699, 234639, 507123, 542097, 1746757, 5240271, 15720813]

約数ペア:

[(1, 15720813), (3, 5240271), (9, 1746757), (29, 542097), (31, 507123), (67, 234639), (87, 180699), (93, 169041), (201, 78213), (261, 60233), (279, 56347), (603, 26071), (841, 18693), (899, 17487), (1943, 8091), (2077, 7569), (2523, 6231), (2697, 5829)]