21448140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{229}}^1$

素因数の和:471

約数の個数: 96

約数和(自身を含む): 69242880

約数和(自身を除く): 47794740

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, 210, 223, 229, 420, 446, 458, 669, 687, 892, 916, 1115, 1145, 1338, 1374, 1561, 1603, 2230, 2290, 2676, 2748, 3122, 3206, 3345, 3435, 4460, 4580, 4683, 4809, 6244, 6412, 6690, 6870, 7805, 8015, 9366, 9618, 13380, 13740, 15610, 16030, 18732, 19236, 23415, 24045, 31220, 32060, 46830, 48090, 51067, 93660, 96180, 102134, 153201, 204268, 255335, 306402, 357469, 510670, 612804, 714938, 766005, 1021340, 1072407, 1429876, 1532010, 1787345, 2144814, 3064020, 3574690, 4289628, 5362035, 7149380, 10724070, 21448140]

約数ペア:

[(1, 21448140), (2, 10724070), (3, 7149380), (4, 5362035), (5, 4289628), (6, 3574690), (7, 3064020), (10, 2144814), (12, 1787345), (14, 1532010), (15, 1429876), (20, 1072407), (21, 1021340), (28, 766005), (30, 714938), (35, 612804), (42, 510670), (60, 357469), (70, 306402), (84, 255335), (105, 204268), (140, 153201), (210, 102134), (223, 96180), (229, 93660), (420, 51067), (446, 48090), (458, 46830), (669, 32060), (687, 31220), (892, 24045), (916, 23415), (1115, 19236), (1145, 18732), (1338, 16030), (1374, 15610), (1561, 13740), (1603, 13380), (2230, 9618), (2290, 9366), (2676, 8015), (2748, 7805), (3122, 6870), (3206, 6690), (3345, 6412), (3435, 6244), (4460, 4809), (4580, 4683)]