21631005

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 41446080

約数和(自身を除く): 19815075

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 89, 99, 165, 267, 445, 491, 495, 801, 979, 1335, 1473, 2455, 2937, 4005, 4419, 4895, 5401, 7365, 8811, 14685, 16203, 22095, 27005, 43699, 44055, 48609, 81015, 131097, 218495, 243045, 393291, 480689, 655485, 1442067, 1966455, 2403445, 4326201, 7210335, 21631005]

約数ペア:

[(1, 21631005), (3, 7210335), (5, 4326201), (9, 2403445), (11, 1966455), (15, 1442067), (33, 655485), (45, 480689), (55, 393291), (89, 243045), (99, 218495), (165, 131097), (267, 81015), (445, 48609), (491, 44055), (495, 43699), (801, 27005), (979, 22095), (1335, 16203), (1473, 14685), (2455, 8811), (2937, 7365), (4005, 5401), (4419, 4895)]