18946720

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9109}}^1$

素因数の和:9137

約数の個数: 48

約数和(自身を含む): 48210120

約数和(自身を除く): 29263400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9109, 18218, 36436, 45545, 72872, 91090, 118417, 145744, 182180, 236834, 291488, 364360, 473668, 592085, 728720, 947336, 1184170, 1457440, 1894672, 2368340, 3789344, 4736680, 9473360, 18946720]

約数ペア:

[(1, 18946720), (2, 9473360), (4, 4736680), (5, 3789344), (8, 2368340), (10, 1894672), (13, 1457440), (16, 1184170), (20, 947336), (26, 728720), (32, 592085), (40, 473668), (52, 364360), (65, 291488), (80, 236834), (104, 182180), (130, 145744), (160, 118417), (208, 91090), (260, 72872), (416, 45545), (520, 36436), (1040, 18218), (2080, 9109)]