20867200

素因数分解:

$2^7\times 5^2\times {\mathrm{6521}}^1$

素因数の和:6545

約数の個数: 48

約数和(自身を含む): 51556410

約数和(自身を除く): 30689210

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6521, 13042, 26084, 32605, 52168, 65210, 104336, 130420, 163025, 208672, 260840, 326050, 417344, 521680, 652100, 834688, 1043360, 1304200, 2086720, 2608400, 4173440, 5216800, 10433600, 20867200]

約数ペア:

[(1, 20867200), (2, 10433600), (4, 5216800), (5, 4173440), (8, 2608400), (10, 2086720), (16, 1304200), (20, 1043360), (25, 834688), (32, 652100), (40, 521680), (50, 417344), (64, 326050), (80, 260840), (100, 208672), (128, 163025), (160, 130420), (200, 104336), (320, 65210), (400, 52168), (640, 32605), (800, 26084), (1600, 13042), (3200, 6521)]