20487204

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 54774720

約数和(自身を除く): 34287516

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 109, 138, 207, 218, 227, 276, 327, 414, 436, 454, 654, 681, 828, 908, 981, 1308, 1362, 1962, 2043, 2507, 2724, 3924, 4086, 5014, 5221, 7521, 8172, 10028, 10442, 15042, 15663, 20884, 22563, 24743, 30084, 31326, 45126, 46989, 49486, 62652, 74229, 90252, 93978, 98972, 148458, 187956, 222687, 296916, 445374, 569089, 890748, 1138178, 1707267, 2276356, 3414534, 5121801, 6829068, 10243602, 20487204]

約数ペア:

[(1, 20487204), (2, 10243602), (3, 6829068), (4, 5121801), (6, 3414534), (9, 2276356), (12, 1707267), (18, 1138178), (23, 890748), (36, 569089), (46, 445374), (69, 296916), (92, 222687), (109, 187956), (138, 148458), (207, 98972), (218, 93978), (227, 90252), (276, 74229), (327, 62652), (414, 49486), (436, 46989), (454, 45126), (654, 31326), (681, 30084), (828, 24743), (908, 22563), (981, 20884), (1308, 15663), (1362, 15042), (1962, 10442), (2043, 10028), (2507, 8172), (2724, 7521), (3924, 5221), (4086, 5014)]