30817900

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 69995520

約数和(自身を除く): 39177620

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 79, 83, 94, 100, 158, 166, 188, 235, 316, 332, 395, 415, 470, 790, 830, 940, 1175, 1580, 1660, 1975, 2075, 2350, 3713, 3901, 3950, 4150, 4700, 6557, 7426, 7802, 7900, 8300, 13114, 14852, 15604, 18565, 19505, 26228, 32785, 37130, 39010, 65570, 74260, 78020, 92825, 97525, 131140, 163925, 185650, 195050, 308179, 327850, 371300, 390100, 616358, 655700, 1232716, 1540895, 3081790, 6163580, 7704475, 15408950, 30817900]

約数ペア:

[(1, 30817900), (2, 15408950), (4, 7704475), (5, 6163580), (10, 3081790), (20, 1540895), (25, 1232716), (47, 655700), (50, 616358), (79, 390100), (83, 371300), (94, 327850), (100, 308179), (158, 195050), (166, 185650), (188, 163925), (235, 131140), (316, 97525), (332, 92825), (395, 78020), (415, 74260), (470, 65570), (790, 39010), (830, 37130), (940, 32785), (1175, 26228), (1580, 19505), (1660, 18565), (1975, 15604), (2075, 14852), (2350, 13114), (3713, 8300), (3901, 7900), (3950, 7802), (4150, 7426), (4700, 6557)]