18981760

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:268

約数の個数: 128

約数和(自身を含む): 54835200

約数和(自身を除く): 35853440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 128, 133, 140, 152, 160, 190, 223, 224, 266, 280, 304, 320, 380, 446, 448, 532, 560, 608, 640, 665, 760, 892, 896, 1064, 1115, 1120, 1216, 1330, 1520, 1561, 1784, 2128, 2230, 2240, 2432, 2660, 3040, 3122, 3568, 4237, 4256, 4460, 4480, 5320, 6080, 6244, 7136, 7805, 8474, 8512, 8920, 10640, 12160, 12488, 14272, 15610, 16948, 17024, 17840, 21185, 21280, 24976, 28544, 29659, 31220, 33896, 35680, 42370, 42560, 49952, 59318, 62440, 67792, 71360, 84740, 85120, 99904, 118636, 124880, 135584, 142720, 148295, 169480, 199808, 237272, 249760, 271168, 296590, 338960, 474544, 499520, 542336, 593180, 677920, 949088, 999040, 1186360, 1355840, 1898176, 2372720, 2711680, 3796352, 4745440, 9490880, 18981760]

約数ペア:

[(1, 18981760), (2, 9490880), (4, 4745440), (5, 3796352), (7, 2711680), (8, 2372720), (10, 1898176), (14, 1355840), (16, 1186360), (19, 999040), (20, 949088), (28, 677920), (32, 593180), (35, 542336), (38, 499520), (40, 474544), (56, 338960), (64, 296590), (70, 271168), (76, 249760), (80, 237272), (95, 199808), (112, 169480), (128, 148295), (133, 142720), (140, 135584), (152, 124880), (160, 118636), (190, 99904), (223, 85120), (224, 84740), (266, 71360), (280, 67792), (304, 62440), (320, 59318), (380, 49952), (446, 42560), (448, 42370), (532, 35680), (560, 33896), (608, 31220), (640, 29659), (665, 28544), (760, 24976), (892, 21280), (896, 21185), (1064, 17840), (1115, 17024), (1120, 16948), (1216, 15610), (1330, 14272), (1520, 12488), (1561, 12160), (1784, 10640), (2128, 8920), (2230, 8512), (2240, 8474), (2432, 7805), (2660, 7136), (3040, 6244), (3122, 6080), (3568, 5320), (4237, 4480), (4256, 4460)]