20451900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9739}}^1$

素因数の和:9763

約数の個数: 72

約数和(自身を含む): 67634560

約数和(自身を除く): 47182660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9739, 19478, 29217, 38956, 48695, 58434, 68173, 97390, 116868, 136346, 146085, 194780, 204519, 243475, 272692, 292170, 340865, 409038, 486950, 584340, 681730, 730425, 818076, 973900, 1022595, 1363460, 1460850, 1704325, 2045190, 2921700, 3408650, 4090380, 5112975, 6817300, 10225950, 20451900]

約数ペア:

[(1, 20451900), (2, 10225950), (3, 6817300), (4, 5112975), (5, 4090380), (6, 3408650), (7, 2921700), (10, 2045190), (12, 1704325), (14, 1460850), (15, 1363460), (20, 1022595), (21, 973900), (25, 818076), (28, 730425), (30, 681730), (35, 584340), (42, 486950), (50, 409038), (60, 340865), (70, 292170), (75, 272692), (84, 243475), (100, 204519), (105, 194780), (140, 146085), (150, 136346), (175, 116868), (210, 97390), (300, 68173), (350, 58434), (420, 48695), (525, 38956), (700, 29217), (1050, 19478), (2100, 9739)]