18002500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:422

約数の個数: 60

約数和(自身を含む): 41549200

約数和(自身を除く): 23546700

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 379, 380, 475, 500, 625, 758, 950, 1250, 1516, 1895, 1900, 2375, 2500, 3790, 4750, 7201, 7580, 9475, 9500, 11875, 14402, 18950, 23750, 28804, 36005, 37900, 47375, 47500, 72010, 94750, 144020, 180025, 189500, 236875, 360050, 473750, 720100, 900125, 947500, 1800250, 3600500, 4500625, 9001250, 18002500]

約数ペア:

[(1, 18002500), (2, 9001250), (4, 4500625), (5, 3600500), (10, 1800250), (19, 947500), (20, 900125), (25, 720100), (38, 473750), (50, 360050), (76, 236875), (95, 189500), (100, 180025), (125, 144020), (190, 94750), (250, 72010), (379, 47500), (380, 47375), (475, 37900), (500, 36005), (625, 28804), (758, 23750), (950, 18950), (1250, 14402), (1516, 11875), (1895, 9500), (1900, 9475), (2375, 7580), (2500, 7201), (3790, 4750)]