1661625

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{211}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 3439488

約数和(自身を除く): 1777863

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 211, 225, 315, 375, 525, 633, 875, 1055, 1125, 1477, 1575, 1899, 2625, 3165, 4431, 5275, 7385, 7875, 9495, 13293, 15825, 22155, 26375, 36925, 47475, 66465, 79125, 110775, 184625, 237375, 332325, 553875, 1661625]

約数ペア:

[(1, 1661625), (3, 553875), (5, 332325), (7, 237375), (9, 184625), (15, 110775), (21, 79125), (25, 66465), (35, 47475), (45, 36925), (63, 26375), (75, 22155), (105, 15825), (125, 13293), (175, 9495), (211, 7875), (225, 7385), (315, 5275), (375, 4431), (525, 3165), (633, 2625), (875, 1899), (1055, 1575), (1125, 1477)]