389635900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:204

約数の個数: 144

約数和(自身を含む): 928829440

約数和(自身を除く): 539193540

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 37, 43, 50, 62, 74, 79, 86, 100, 124, 148, 155, 158, 172, 185, 215, 310, 316, 370, 395, 430, 620, 740, 775, 790, 860, 925, 1075, 1147, 1333, 1550, 1580, 1591, 1850, 1975, 2150, 2294, 2449, 2666, 2923, 3100, 3182, 3397, 3700, 3950, 4300, 4588, 4898, 5332, 5735, 5846, 6364, 6665, 6794, 7900, 7955, 9796, 11470, 11692, 12245, 13330, 13588, 14615, 15910, 16985, 22940, 24490, 26660, 28675, 29230, 31820, 33325, 33970, 39775, 48980, 49321, 57350, 58460, 61225, 66650, 67940, 73075, 79550, 84925, 90613, 98642, 105307, 114700, 122450, 125689, 133300, 146150, 159100, 169850, 181226, 197284, 210614, 244900, 246605, 251378, 292300, 339700, 362452, 421228, 453065, 493210, 502756, 526535, 628445, 906130, 986420, 1053070, 1233025, 1256890, 1812260, 2106140, 2265325, 2466050, 2513780, 2632675, 3142225, 3896359, 4530650, 4932100, 5265350, 6284450, 7792718, 9061300, 10530700, 12568900, 15585436, 19481795, 38963590, 77927180, 97408975, 194817950, 389635900]

約数ペア:

[(1, 389635900), (2, 194817950), (4, 97408975), (5, 77927180), (10, 38963590), (20, 19481795), (25, 15585436), (31, 12568900), (37, 10530700), (43, 9061300), (50, 7792718), (62, 6284450), (74, 5265350), (79, 4932100), (86, 4530650), (100, 3896359), (124, 3142225), (148, 2632675), (155, 2513780), (158, 2466050), (172, 2265325), (185, 2106140), (215, 1812260), (310, 1256890), (316, 1233025), (370, 1053070), (395, 986420), (430, 906130), (620, 628445), (740, 526535), (775, 502756), (790, 493210), (860, 453065), (925, 421228), (1075, 362452), (1147, 339700), (1333, 292300), (1550, 251378), (1580, 246605), (1591, 244900), (1850, 210614), (1975, 197284), (2150, 181226), (2294, 169850), (2449, 159100), (2666, 146150), (2923, 133300), (3100, 125689), (3182, 122450), (3397, 114700), (3700, 105307), (3950, 98642), (4300, 90613), (4588, 84925), (4898, 79550), (5332, 73075), (5735, 67940), (5846, 66650), (6364, 61225), (6665, 58460), (6794, 57350), (7900, 49321), (7955, 48980), (9796, 39775), (11470, 33970), (11692, 33325), (12245, 31820), (13330, 29230), (13588, 28675), (14615, 26660), (15910, 24490), (16985, 22940)]