1216209920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:288

約数の個数: 176

約数和(自身を含む): 3143700720

約数和(自身を除く): 1927490800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 89, 128, 136, 157, 160, 170, 178, 256, 272, 314, 320, 340, 356, 445, 512, 544, 628, 640, 680, 712, 785, 890, 1024, 1088, 1256, 1280, 1360, 1424, 1513, 1570, 1780, 2176, 2512, 2560, 2669, 2720, 2848, 3026, 3140, 3560, 4352, 5024, 5120, 5338, 5440, 5696, 6052, 6280, 7120, 7565, 8704, 10048, 10676, 10880, 11392, 12104, 12560, 13345, 13973, 14240, 15130, 17408, 20096, 21352, 21760, 22784, 24208, 25120, 26690, 27946, 28480, 30260, 40192, 42704, 43520, 45568, 48416, 50240, 53380, 55892, 56960, 60520, 69865, 80384, 85408, 87040, 91136, 96832, 100480, 106760, 111784, 113920, 121040, 139730, 160768, 170816, 193664, 200960, 213520, 223568, 227840, 237541, 242080, 279460, 341632, 387328, 401920, 427040, 447136, 455680, 475082, 484160, 558920, 683264, 774656, 803840, 854080, 894272, 950164, 968320, 1117840, 1187705, 1366528, 1549312, 1708160, 1788544, 1900328, 1936640, 2235680, 2375410, 2733056, 3416320, 3577088, 3800656, 3873280, 4471360, 4750820, 6832640, 7154176, 7601312, 7746560, 8942720, 9501640, 13665280, 14308352, 15202624, 17885440, 19003280, 30405248, 35770880, 38006560, 60810496, 71541760, 76013120, 121620992, 152026240, 243241984, 304052480, 608104960, 1216209920]

約数ペア:

[(1, 1216209920), (2, 608104960), (4, 304052480), (5, 243241984), (8, 152026240), (10, 121620992), (16, 76013120), (17, 71541760), (20, 60810496), (32, 38006560), (34, 35770880), (40, 30405248), (64, 19003280), (68, 17885440), (80, 15202624), (85, 14308352), (89, 13665280), (128, 9501640), (136, 8942720), (157, 7746560), (160, 7601312), (170, 7154176), (178, 6832640), (256, 4750820), (272, 4471360), (314, 3873280), (320, 3800656), (340, 3577088), (356, 3416320), (445, 2733056), (512, 2375410), (544, 2235680), (628, 1936640), (640, 1900328), (680, 1788544), (712, 1708160), (785, 1549312), (890, 1366528), (1024, 1187705), (1088, 1117840), (1256, 968320), (1280, 950164), (1360, 894272), (1424, 854080), (1513, 803840), (1570, 774656), (1780, 683264), (2176, 558920), (2512, 484160), (2560, 475082), (2669, 455680), (2720, 447136), (2848, 427040), (3026, 401920), (3140, 387328), (3560, 341632), (4352, 279460), (5024, 242080), (5120, 237541), (5338, 227840), (5440, 223568), (5696, 213520), (6052, 200960), (6280, 193664), (7120, 170816), (7565, 160768), (8704, 139730), (10048, 121040), (10676, 113920), (10880, 111784), (11392, 106760), (12104, 100480), (12560, 96832), (13345, 91136), (13973, 87040), (14240, 85408), (15130, 80384), (17408, 69865), (20096, 60520), (21352, 56960), (21760, 55892), (22784, 53380), (24208, 50240), (25120, 48416), (26690, 45568), (27946, 43520), (28480, 42704), (30260, 40192)]