21233655

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 17685225

約数列:

[1, 3, 5, 9, 15, 29, 45, 53, 87, 145, 159, 261, 265, 307, 435, 477, 795, 921, 1305, 1535, 1537, 2385, 2763, 4605, 4611, 7685, 8903, 13815, 13833, 16271, 23055, 26709, 44515, 48813, 69165, 80127, 81355, 133545, 146439, 244065, 400635, 471859, 732195, 1415577, 2359295, 4246731, 7077885, 21233655]

約数ペア:

[(1, 21233655), (3, 7077885), (5, 4246731), (9, 2359295), (15, 1415577), (29, 732195), (45, 471859), (53, 400635), (87, 244065), (145, 146439), (159, 133545), (261, 81355), (265, 80127), (307, 69165), (435, 48813), (477, 44515), (795, 26709), (921, 23055), (1305, 16271), (1535, 13833), (1537, 13815), (2385, 8903), (2763, 7685), (4605, 4611)]