21307160

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{1553}}^1$

素因数の和:1585

約数の個数: 64

約数和(自身を含む): 55944000

約数和(自身を除く): 34636840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1553, 1715, 1960, 2744, 3106, 3430, 6212, 6860, 7765, 10871, 12424, 13720, 15530, 21742, 31060, 43484, 54355, 62120, 76097, 86968, 108710, 152194, 217420, 304388, 380485, 434840, 532679, 608776, 760970, 1065358, 1521940, 2130716, 2663395, 3043880, 4261432, 5326790, 10653580, 21307160]

約数ペア:

[(1, 21307160), (2, 10653580), (4, 5326790), (5, 4261432), (7, 3043880), (8, 2663395), (10, 2130716), (14, 1521940), (20, 1065358), (28, 760970), (35, 608776), (40, 532679), (49, 434840), (56, 380485), (70, 304388), (98, 217420), (140, 152194), (196, 108710), (245, 86968), (280, 76097), (343, 62120), (392, 54355), (490, 43484), (686, 31060), (980, 21742), (1372, 15530), (1553, 13720), (1715, 12424), (1960, 10871), (2744, 7765), (3106, 6860), (3430, 6212)]