21501760

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:384

約数の個数: 112

約数和(自身を含む): 60716160

約数和(自身を除く): 39214400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 112, 116, 140, 145, 160, 203, 224, 232, 280, 290, 320, 331, 406, 448, 464, 560, 580, 662, 812, 928, 1015, 1120, 1160, 1324, 1624, 1655, 1856, 2030, 2240, 2317, 2320, 2648, 3248, 3310, 4060, 4634, 4640, 5296, 6496, 6620, 8120, 9268, 9280, 9599, 10592, 11585, 12992, 13240, 16240, 18536, 19198, 21184, 23170, 26480, 32480, 37072, 38396, 46340, 47995, 52960, 64960, 67193, 74144, 76792, 92680, 95990, 105920, 134386, 148288, 153584, 185360, 191980, 268772, 307168, 335965, 370720, 383960, 537544, 614336, 671930, 741440, 767920, 1075088, 1343860, 1535840, 2150176, 2687720, 3071680, 4300352, 5375440, 10750880, 21501760]

約数ペア:

[(1, 21501760), (2, 10750880), (4, 5375440), (5, 4300352), (7, 3071680), (8, 2687720), (10, 2150176), (14, 1535840), (16, 1343860), (20, 1075088), (28, 767920), (29, 741440), (32, 671930), (35, 614336), (40, 537544), (56, 383960), (58, 370720), (64, 335965), (70, 307168), (80, 268772), (112, 191980), (116, 185360), (140, 153584), (145, 148288), (160, 134386), (203, 105920), (224, 95990), (232, 92680), (280, 76792), (290, 74144), (320, 67193), (331, 64960), (406, 52960), (448, 47995), (464, 46340), (560, 38396), (580, 37072), (662, 32480), (812, 26480), (928, 23170), (1015, 21184), (1120, 19198), (1160, 18536), (1324, 16240), (1624, 13240), (1655, 12992), (1856, 11585), (2030, 10592), (2240, 9599), (2317, 9280), (2320, 9268), (2648, 8120), (3248, 6620), (3310, 6496), (4060, 5296), (4634, 4640)]