20889428

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 44083200

約数和(自身を除く): 23193772

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 163, 199, 322, 326, 398, 644, 652, 796, 1141, 1393, 2282, 2786, 3749, 4564, 4577, 5572, 7498, 9154, 14996, 18308, 26243, 32039, 32437, 52486, 64078, 64874, 104972, 128156, 129748, 227059, 454118, 746051, 908236, 1492102, 2984204, 5222357, 10444714, 20889428]

約数ペア:

[(1, 20889428), (2, 10444714), (4, 5222357), (7, 2984204), (14, 1492102), (23, 908236), (28, 746051), (46, 454118), (92, 227059), (161, 129748), (163, 128156), (199, 104972), (322, 64874), (326, 64078), (398, 52486), (644, 32437), (652, 32039), (796, 26243), (1141, 18308), (1393, 14996), (2282, 9154), (2786, 7498), (3749, 5572), (4564, 4577)]