21803340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27953}}^1$

素因数の和:27978

約数の個数: 48

約数和(自身を含む): 65747808

約数和(自身を除く): 43944468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27953, 55906, 83859, 111812, 139765, 167718, 279530, 335436, 363389, 419295, 559060, 726778, 838590, 1090167, 1453556, 1677180, 1816945, 2180334, 3633890, 4360668, 5450835, 7267780, 10901670, 21803340]

約数ペア:

[(1, 21803340), (2, 10901670), (3, 7267780), (4, 5450835), (5, 4360668), (6, 3633890), (10, 2180334), (12, 1816945), (13, 1677180), (15, 1453556), (20, 1090167), (26, 838590), (30, 726778), (39, 559060), (52, 419295), (60, 363389), (65, 335436), (78, 279530), (130, 167718), (156, 139765), (195, 111812), (260, 83859), (390, 55906), (780, 27953)]