21004750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 44343936

約数和(自身を除く): 23339186

約数列:

[1, 2, 5, 10, 13, 23, 25, 26, 46, 50, 65, 115, 125, 130, 230, 250, 281, 299, 325, 562, 575, 598, 650, 1150, 1405, 1495, 1625, 2810, 2875, 2990, 3250, 3653, 5750, 6463, 7025, 7306, 7475, 12926, 14050, 14950, 18265, 32315, 35125, 36530, 37375, 64630, 70250, 74750, 84019, 91325, 161575, 168038, 182650, 323150, 420095, 456625, 807875, 840190, 913250, 1615750, 2100475, 4200950, 10502375, 21004750]

約数ペア:

[(1, 21004750), (2, 10502375), (5, 4200950), (10, 2100475), (13, 1615750), (23, 913250), (25, 840190), (26, 807875), (46, 456625), (50, 420095), (65, 323150), (115, 182650), (125, 168038), (130, 161575), (230, 91325), (250, 84019), (281, 74750), (299, 70250), (325, 64630), (562, 37375), (575, 36530), (598, 35125), (650, 32315), (1150, 18265), (1405, 14950), (1495, 14050), (1625, 12926), (2810, 7475), (2875, 7306), (2990, 7025), (3250, 6463), (3653, 5750)]