21393180

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{229}}^1$

素因数の和:420

約数の個数: 96

約数和(自身を含む): 67233600

約数和(自身を除く): 45840420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 173, 180, 229, 270, 346, 458, 519, 540, 687, 692, 865, 916, 1038, 1145, 1374, 1557, 1730, 2061, 2076, 2290, 2595, 2748, 3114, 3435, 3460, 4122, 4580, 4671, 5190, 6183, 6228, 6870, 7785, 8244, 9342, 10305, 10380, 12366, 13740, 15570, 18684, 20610, 23355, 24732, 30915, 31140, 39617, 41220, 46710, 61830, 79234, 93420, 118851, 123660, 158468, 198085, 237702, 356553, 396170, 475404, 594255, 713106, 792340, 1069659, 1188510, 1426212, 1782765, 2139318, 2377020, 3565530, 4278636, 5348295, 7131060, 10696590, 21393180]

約数ペア:

[(1, 21393180), (2, 10696590), (3, 7131060), (4, 5348295), (5, 4278636), (6, 3565530), (9, 2377020), (10, 2139318), (12, 1782765), (15, 1426212), (18, 1188510), (20, 1069659), (27, 792340), (30, 713106), (36, 594255), (45, 475404), (54, 396170), (60, 356553), (90, 237702), (108, 198085), (135, 158468), (173, 123660), (180, 118851), (229, 93420), (270, 79234), (346, 61830), (458, 46710), (519, 41220), (540, 39617), (687, 31140), (692, 30915), (865, 24732), (916, 23355), (1038, 20610), (1145, 18684), (1374, 15570), (1557, 13740), (1730, 12366), (2061, 10380), (2076, 10305), (2290, 9342), (2595, 8244), (2748, 7785), (3114, 6870), (3435, 6228), (3460, 6183), (4122, 5190), (4580, 4671)]