18649760

素因数分解:

$2^5\times 5^1\times {\mathrm{229}}^1\times {\mathrm{509}}^1$

素因数の和:753

約数の個数: 48

約数和(自身を含む): 44339400

約数和(自身を除く): 25689640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 229, 458, 509, 916, 1018, 1145, 1832, 2036, 2290, 2545, 3664, 4072, 4580, 5090, 7328, 8144, 9160, 10180, 16288, 18320, 20360, 36640, 40720, 81440, 116561, 233122, 466244, 582805, 932488, 1165610, 1864976, 2331220, 3729952, 4662440, 9324880, 18649760]

約数ペア:

[(1, 18649760), (2, 9324880), (4, 4662440), (5, 3729952), (8, 2331220), (10, 1864976), (16, 1165610), (20, 932488), (32, 582805), (40, 466244), (80, 233122), (160, 116561), (229, 81440), (458, 40720), (509, 36640), (916, 20360), (1018, 18320), (1145, 16288), (1832, 10180), (2036, 9160), (2290, 8144), (2545, 7328), (3664, 5090), (4072, 4580)]