18959044

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 37428160

約数和(自身を除く): 18469116

約数列:

[1, 2, 4, 13, 26, 43, 52, 61, 86, 122, 139, 172, 244, 278, 556, 559, 793, 1118, 1586, 1807, 2236, 2623, 3172, 3614, 5246, 5977, 7228, 8479, 10492, 11954, 16958, 23908, 33916, 34099, 68198, 77701, 110227, 136396, 155402, 220454, 310804, 364597, 440908, 729194, 1458388, 4739761, 9479522, 18959044]

約数ペア:

[(1, 18959044), (2, 9479522), (4, 4739761), (13, 1458388), (26, 729194), (43, 440908), (52, 364597), (61, 310804), (86, 220454), (122, 155402), (139, 136396), (172, 110227), (244, 77701), (278, 68198), (556, 34099), (559, 33916), (793, 23908), (1118, 16958), (1586, 11954), (1807, 10492), (2236, 8479), (2623, 7228), (3172, 5977), (3614, 5246)]