8428400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1109}}^1$

素因数の和:1146

約数の個数: 60

約数和(自身を含む): 21334200

約数和(自身を除く): 12905800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1109, 1520, 1900, 2218, 3800, 4436, 5545, 7600, 8872, 11090, 17744, 21071, 22180, 27725, 42142, 44360, 55450, 84284, 88720, 105355, 110900, 168568, 210710, 221800, 337136, 421420, 443600, 526775, 842840, 1053550, 1685680, 2107100, 4214200, 8428400]

約数ペア:

[(1, 8428400), (2, 4214200), (4, 2107100), (5, 1685680), (8, 1053550), (10, 842840), (16, 526775), (19, 443600), (20, 421420), (25, 337136), (38, 221800), (40, 210710), (50, 168568), (76, 110900), (80, 105355), (95, 88720), (100, 84284), (152, 55450), (190, 44360), (200, 42142), (304, 27725), (380, 22180), (400, 21071), (475, 17744), (760, 11090), (950, 8872), (1109, 7600), (1520, 5545), (1900, 4436), (2218, 3800)]