20381040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28307}}^1$

素因数の和:28326

約数の個数: 60

約数和(自身を含む): 68448744

約数和(自身を除く): 48067704

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28307, 56614, 84921, 113228, 141535, 169842, 226456, 254763, 283070, 339684, 424605, 452912, 509526, 566140, 679368, 849210, 1019052, 1132280, 1273815, 1358736, 1698420, 2038104, 2264560, 2547630, 3396840, 4076208, 5095260, 6793680, 10190520, 20381040]

約数ペア:

[(1, 20381040), (2, 10190520), (3, 6793680), (4, 5095260), (5, 4076208), (6, 3396840), (8, 2547630), (9, 2264560), (10, 2038104), (12, 1698420), (15, 1358736), (16, 1273815), (18, 1132280), (20, 1019052), (24, 849210), (30, 679368), (36, 566140), (40, 509526), (45, 452912), (48, 424605), (60, 339684), (72, 283070), (80, 254763), (90, 226456), (120, 169842), (144, 141535), (180, 113228), (240, 84921), (360, 56614), (720, 28307)]