389613040

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{72689}}^1$

素因数の和:72769

約数の個数: 40

約数和(自身を含む): 919383120

約数和(自身を除く): 529770080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 72689, 145378, 290756, 363445, 581512, 726890, 1163024, 1453780, 2907560, 4870163, 5815120, 9740326, 19480652, 24350815, 38961304, 48701630, 77922608, 97403260, 194806520, 389613040]

約数ペア:

[(1, 389613040), (2, 194806520), (4, 97403260), (5, 77922608), (8, 48701630), (10, 38961304), (16, 24350815), (20, 19480652), (40, 9740326), (67, 5815120), (80, 4870163), (134, 2907560), (268, 1453780), (335, 1163024), (536, 726890), (670, 581512), (1072, 363445), (1340, 290756), (2680, 145378), (5360, 72689)]