21826140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1$

素因数の和:507

約数の個数: 96

約数和(自身を含む): 70500864

約数和(自身を除く): 48674724

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 157, 210, 314, 331, 420, 471, 628, 662, 785, 942, 993, 1099, 1324, 1570, 1655, 1884, 1986, 2198, 2317, 2355, 3140, 3297, 3310, 3972, 4396, 4634, 4710, 4965, 5495, 6594, 6620, 6951, 9268, 9420, 9930, 10990, 11585, 13188, 13902, 16485, 19860, 21980, 23170, 27804, 32970, 34755, 46340, 51967, 65940, 69510, 103934, 139020, 155901, 207868, 259835, 311802, 363769, 519670, 623604, 727538, 779505, 1039340, 1091307, 1455076, 1559010, 1818845, 2182614, 3118020, 3637690, 4365228, 5456535, 7275380, 10913070, 21826140]

約数ペア:

[(1, 21826140), (2, 10913070), (3, 7275380), (4, 5456535), (5, 4365228), (6, 3637690), (7, 3118020), (10, 2182614), (12, 1818845), (14, 1559010), (15, 1455076), (20, 1091307), (21, 1039340), (28, 779505), (30, 727538), (35, 623604), (42, 519670), (60, 363769), (70, 311802), (84, 259835), (105, 207868), (140, 155901), (157, 139020), (210, 103934), (314, 69510), (331, 65940), (420, 51967), (471, 46340), (628, 34755), (662, 32970), (785, 27804), (942, 23170), (993, 21980), (1099, 19860), (1324, 16485), (1570, 13902), (1655, 13188), (1884, 11585), (1986, 10990), (2198, 9930), (2317, 9420), (2355, 9268), (3140, 6951), (3297, 6620), (3310, 6594), (3972, 5495), (4396, 4965), (4634, 4710)]