81664520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{5503}}^1$

素因数の和:5574

約数の個数: 64

約数和(自身を含む): 213995520

約数和(自身を除く): 132331000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 140, 212, 265, 280, 371, 424, 530, 742, 1060, 1484, 1855, 2120, 2968, 3710, 5503, 7420, 11006, 14840, 22012, 27515, 38521, 44024, 55030, 77042, 110060, 154084, 192605, 220120, 291659, 308168, 385210, 583318, 770420, 1166636, 1458295, 1540840, 2041613, 2333272, 2916590, 4083226, 5833180, 8166452, 10208065, 11666360, 16332904, 20416130, 40832260, 81664520]

約数ペア:

[(1, 81664520), (2, 40832260), (4, 20416130), (5, 16332904), (7, 11666360), (8, 10208065), (10, 8166452), (14, 5833180), (20, 4083226), (28, 2916590), (35, 2333272), (40, 2041613), (53, 1540840), (56, 1458295), (70, 1166636), (106, 770420), (140, 583318), (212, 385210), (265, 308168), (280, 291659), (371, 220120), (424, 192605), (530, 154084), (742, 110060), (1060, 77042), (1484, 55030), (1855, 44024), (2120, 38521), (2968, 27515), (3710, 22012), (5503, 14840), (7420, 11006)]