18781100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{14447}}^1$

素因数の和:14474

約数の個数: 36

約数和(自身を含む): 43893024

約数和(自身を除く): 25111924

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 14447, 28894, 57788, 72235, 144470, 187811, 288940, 361175, 375622, 722350, 751244, 939055, 1444700, 1878110, 3756220, 4695275, 9390550, 18781100]

約数ペア:

[(1, 18781100), (2, 9390550), (4, 4695275), (5, 3756220), (10, 1878110), (13, 1444700), (20, 939055), (25, 751244), (26, 722350), (50, 375622), (52, 361175), (65, 288940), (100, 187811), (130, 144470), (260, 72235), (325, 57788), (650, 28894), (1300, 14447)]