16440320

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:70

約数の個数: 132

約数和(自身を含む): 44952120

約数和(自身を除く): 28511800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 128, 130, 152, 160, 169, 190, 208, 247, 256, 260, 304, 320, 338, 380, 416, 494, 512, 520, 608, 640, 676, 760, 832, 845, 988, 1024, 1040, 1216, 1235, 1280, 1352, 1520, 1664, 1690, 1976, 2080, 2432, 2470, 2560, 2704, 3040, 3211, 3328, 3380, 3952, 4160, 4864, 4940, 5120, 5408, 6080, 6422, 6656, 6760, 7904, 8320, 9728, 9880, 10816, 12160, 12844, 13312, 13520, 15808, 16055, 16640, 19456, 19760, 21632, 24320, 25688, 27040, 31616, 32110, 33280, 39520, 43264, 48640, 51376, 54080, 63232, 64220, 66560, 79040, 86528, 97280, 102752, 108160, 126464, 128440, 158080, 173056, 205504, 216320, 252928, 256880, 316160, 411008, 432640, 513760, 632320, 822016, 865280, 1027520, 1264640, 1644032, 2055040, 3288064, 4110080, 8220160, 16440320]

約数ペア:

[(1, 16440320), (2, 8220160), (4, 4110080), (5, 3288064), (8, 2055040), (10, 1644032), (13, 1264640), (16, 1027520), (19, 865280), (20, 822016), (26, 632320), (32, 513760), (38, 432640), (40, 411008), (52, 316160), (64, 256880), (65, 252928), (76, 216320), (80, 205504), (95, 173056), (104, 158080), (128, 128440), (130, 126464), (152, 108160), (160, 102752), (169, 97280), (190, 86528), (208, 79040), (247, 66560), (256, 64220), (260, 63232), (304, 54080), (320, 51376), (338, 48640), (380, 43264), (416, 39520), (494, 33280), (512, 32110), (520, 31616), (608, 27040), (640, 25688), (676, 24320), (760, 21632), (832, 19760), (845, 19456), (988, 16640), (1024, 16055), (1040, 15808), (1216, 13520), (1235, 13312), (1280, 12844), (1352, 12160), (1520, 10816), (1664, 9880), (1690, 9728), (1976, 8320), (2080, 7904), (2432, 6760), (2470, 6656), (2560, 6422), (2704, 6080), (3040, 5408), (3211, 5120), (3328, 4940), (3380, 4864), (3952, 4160)]