216538720

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:488

約数の個数: 96

約数和(自身を含む): 533433600

約数和(自身を除く): 316894880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 149, 155, 160, 248, 293, 298, 310, 496, 586, 596, 620, 745, 992, 1172, 1192, 1240, 1465, 1490, 2344, 2384, 2480, 2930, 2980, 4619, 4688, 4768, 4960, 5860, 5960, 9083, 9238, 9376, 11720, 11920, 18166, 18476, 23095, 23440, 23840, 36332, 36952, 43657, 45415, 46190, 46880, 72664, 73904, 87314, 90830, 92380, 145328, 147808, 174628, 181660, 184760, 218285, 290656, 349256, 363320, 369520, 436570, 698512, 726640, 739040, 873140, 1353367, 1397024, 1453280, 1746280, 2706734, 3492560, 5413468, 6766835, 6985120, 10826936, 13533670, 21653872, 27067340, 43307744, 54134680, 108269360, 216538720]

約数ペア:

[(1, 216538720), (2, 108269360), (4, 54134680), (5, 43307744), (8, 27067340), (10, 21653872), (16, 13533670), (20, 10826936), (31, 6985120), (32, 6766835), (40, 5413468), (62, 3492560), (80, 2706734), (124, 1746280), (149, 1453280), (155, 1397024), (160, 1353367), (248, 873140), (293, 739040), (298, 726640), (310, 698512), (496, 436570), (586, 369520), (596, 363320), (620, 349256), (745, 290656), (992, 218285), (1172, 184760), (1192, 181660), (1240, 174628), (1465, 147808), (1490, 145328), (2344, 92380), (2384, 90830), (2480, 87314), (2930, 73904), (2980, 72664), (4619, 46880), (4688, 46190), (4768, 45415), (4960, 43657), (5860, 36952), (5960, 36332), (9083, 23840), (9238, 23440), (9376, 23095), (11720, 18476), (11920, 18166)]