19215189

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 33696000

約数和(自身を除く): 14480811

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 89, 149, 161, 207, 267, 447, 483, 623, 801, 1043, 1341, 1449, 1869, 2047, 3129, 3427, 5607, 6141, 9387, 10281, 13261, 14329, 18423, 23989, 30843, 39783, 42987, 71967, 92827, 119349, 128961, 215901, 278481, 305003, 835443, 915009, 2135021, 2745027, 6405063, 19215189]

約数ペア:

[(1, 19215189), (3, 6405063), (7, 2745027), (9, 2135021), (21, 915009), (23, 835443), (63, 305003), (69, 278481), (89, 215901), (149, 128961), (161, 119349), (207, 92827), (267, 71967), (447, 42987), (483, 39783), (623, 30843), (801, 23989), (1043, 18423), (1341, 14329), (1449, 13261), (1869, 10281), (2047, 9387), (3129, 6141), (3427, 5607)]