399781300

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{167}}^1\times {\mathrm{647}}^1$

素因数の和:865

約数の個数: 72

約数和(自身を含む): 897692544

約数和(自身を除く): 497911244

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 148, 167, 185, 334, 370, 647, 668, 740, 835, 925, 1294, 1670, 1850, 2588, 3235, 3340, 3700, 4175, 6179, 6470, 8350, 12358, 12940, 16175, 16700, 23939, 24716, 30895, 32350, 47878, 61790, 64700, 95756, 108049, 119695, 123580, 154475, 216098, 239390, 308950, 432196, 478780, 540245, 598475, 617900, 1080490, 1196950, 2160980, 2393900, 2701225, 3997813, 5402450, 7995626, 10804900, 15991252, 19989065, 39978130, 79956260, 99945325, 199890650, 399781300]

約数ペア:

[(1, 399781300), (2, 199890650), (4, 99945325), (5, 79956260), (10, 39978130), (20, 19989065), (25, 15991252), (37, 10804900), (50, 7995626), (74, 5402450), (100, 3997813), (148, 2701225), (167, 2393900), (185, 2160980), (334, 1196950), (370, 1080490), (647, 617900), (668, 598475), (740, 540245), (835, 478780), (925, 432196), (1294, 308950), (1670, 239390), (1850, 216098), (2588, 154475), (3235, 123580), (3340, 119695), (3700, 108049), (4175, 95756), (6179, 64700), (6470, 61790), (8350, 47878), (12358, 32350), (12940, 30895), (16175, 24716), (16700, 23939)]