20551950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{419}}^1$

素因数の和:546

約数の個数: 72

約数和(自身を含む): 55855800

約数和(自身を除く): 35303850

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 109, 150, 218, 225, 327, 419, 450, 545, 654, 838, 981, 1090, 1257, 1635, 1962, 2095, 2514, 2725, 3270, 3771, 4190, 4905, 5450, 6285, 7542, 8175, 9810, 10475, 12570, 16350, 18855, 20950, 24525, 31425, 37710, 45671, 49050, 62850, 91342, 94275, 137013, 188550, 228355, 274026, 411039, 456710, 685065, 822078, 1141775, 1370130, 2055195, 2283550, 3425325, 4110390, 6850650, 10275975, 20551950]

約数ペア:

[(1, 20551950), (2, 10275975), (3, 6850650), (5, 4110390), (6, 3425325), (9, 2283550), (10, 2055195), (15, 1370130), (18, 1141775), (25, 822078), (30, 685065), (45, 456710), (50, 411039), (75, 274026), (90, 228355), (109, 188550), (150, 137013), (218, 94275), (225, 91342), (327, 62850), (419, 49050), (450, 45671), (545, 37710), (654, 31425), (838, 24525), (981, 20950), (1090, 18855), (1257, 16350), (1635, 12570), (1962, 10475), (2095, 9810), (2514, 8175), (2725, 7542), (3270, 6285), (3771, 5450), (4190, 4905)]