1378906880

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{479}}^1$

素因数の和:686

約数の個数: 144

約数和(自身を含む): 3585012480

約数和(自身を除く): 2206105600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 173, 208, 256, 260, 320, 346, 416, 479, 520, 640, 692, 832, 865, 958, 1040, 1280, 1384, 1664, 1730, 1916, 2080, 2249, 2395, 2768, 3328, 3460, 3832, 4160, 4498, 4790, 5536, 6227, 6920, 7664, 8320, 8996, 9580, 11072, 11245, 12454, 13840, 15328, 16640, 17992, 19160, 22144, 22490, 24908, 27680, 30656, 31135, 35984, 38320, 44288, 44980, 49816, 55360, 61312, 62270, 71968, 76640, 82867, 89960, 99632, 110720, 122624, 124540, 143936, 153280, 165734, 179920, 199264, 221440, 249080, 287872, 306560, 331468, 359840, 398528, 414335, 498160, 575744, 613120, 662936, 719680, 797056, 828670, 996320, 1077271, 1325872, 1439360, 1594112, 1657340, 1992640, 2154542, 2651744, 2878720, 3314680, 3985280, 4309084, 5303488, 5386355, 6629360, 7970560, 8618168, 10606976, 10772710, 13258720, 17236336, 21213952, 21545420, 26517440, 34472672, 43090840, 53034880, 68945344, 86181680, 106069760, 137890688, 172363360, 275781376, 344726720, 689453440, 1378906880]

約数ペア:

[(1, 1378906880), (2, 689453440), (4, 344726720), (5, 275781376), (8, 172363360), (10, 137890688), (13, 106069760), (16, 86181680), (20, 68945344), (26, 53034880), (32, 43090840), (40, 34472672), (52, 26517440), (64, 21545420), (65, 21213952), (80, 17236336), (104, 13258720), (128, 10772710), (130, 10606976), (160, 8618168), (173, 7970560), (208, 6629360), (256, 5386355), (260, 5303488), (320, 4309084), (346, 3985280), (416, 3314680), (479, 2878720), (520, 2651744), (640, 2154542), (692, 1992640), (832, 1657340), (865, 1594112), (958, 1439360), (1040, 1325872), (1280, 1077271), (1384, 996320), (1664, 828670), (1730, 797056), (1916, 719680), (2080, 662936), (2249, 613120), (2395, 575744), (2768, 498160), (3328, 414335), (3460, 398528), (3832, 359840), (4160, 331468), (4498, 306560), (4790, 287872), (5536, 249080), (6227, 221440), (6920, 199264), (7664, 179920), (8320, 165734), (8996, 153280), (9580, 143936), (11072, 124540), (11245, 122624), (12454, 110720), (13840, 99632), (15328, 89960), (16640, 82867), (17992, 76640), (19160, 71968), (22144, 62270), (22490, 61312), (24908, 55360), (27680, 49816), (30656, 44980), (31135, 44288), (35984, 38320)]