21983890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1453}}^1$

素因数の和:1566

約数の個数: 32

約数和(自身を含む): 42398640

約数和(自身を除く): 20414750

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1453, 1513, 2906, 3026, 7265, 7565, 14530, 15130, 24701, 49402, 123505, 129317, 247010, 258634, 646585, 1293170, 2198389, 4396778, 10991945, 21983890]

約数ペア:

[(1, 21983890), (2, 10991945), (5, 4396778), (10, 2198389), (17, 1293170), (34, 646585), (85, 258634), (89, 247010), (170, 129317), (178, 123505), (445, 49402), (890, 24701), (1453, 15130), (1513, 14530), (2906, 7565), (3026, 7265)]