18317900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:375

約数の個数: 72

約数和(自身を含む): 43330560

約数和(自身を除く): 25012660

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 62, 76, 95, 100, 124, 155, 190, 310, 311, 380, 475, 589, 620, 622, 775, 950, 1178, 1244, 1550, 1555, 1900, 2356, 2945, 3100, 3110, 5890, 5909, 6220, 7775, 9641, 11780, 11818, 14725, 15550, 19282, 23636, 29450, 29545, 31100, 38564, 48205, 58900, 59090, 96410, 118180, 147725, 183179, 192820, 241025, 295450, 366358, 482050, 590900, 732716, 915895, 964100, 1831790, 3663580, 4579475, 9158950, 18317900]

約数ペア:

[(1, 18317900), (2, 9158950), (4, 4579475), (5, 3663580), (10, 1831790), (19, 964100), (20, 915895), (25, 732716), (31, 590900), (38, 482050), (50, 366358), (62, 295450), (76, 241025), (95, 192820), (100, 183179), (124, 147725), (155, 118180), (190, 96410), (310, 59090), (311, 58900), (380, 48205), (475, 38564), (589, 31100), (620, 29545), (622, 29450), (775, 23636), (950, 19282), (1178, 15550), (1244, 14725), (1550, 11818), (1555, 11780), (1900, 9641), (2356, 7775), (2945, 6220), (3100, 5909), (3110, 5890)]