20714580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{733}}^1$

素因数の和:905

約数の個数: 72

約数和(自身を含む): 63320712

約数和(自身を除く): 42606132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 157, 180, 314, 471, 628, 733, 785, 942, 1413, 1466, 1570, 1884, 2199, 2355, 2826, 2932, 3140, 3665, 4398, 4710, 5652, 6597, 7065, 7330, 8796, 9420, 10995, 13194, 14130, 14660, 21990, 26388, 28260, 32985, 43980, 65970, 115081, 131940, 230162, 345243, 460324, 575405, 690486, 1035729, 1150810, 1380972, 1726215, 2071458, 2301620, 3452430, 4142916, 5178645, 6904860, 10357290, 20714580]

約数ペア:

[(1, 20714580), (2, 10357290), (3, 6904860), (4, 5178645), (5, 4142916), (6, 3452430), (9, 2301620), (10, 2071458), (12, 1726215), (15, 1380972), (18, 1150810), (20, 1035729), (30, 690486), (36, 575405), (45, 460324), (60, 345243), (90, 230162), (157, 131940), (180, 115081), (314, 65970), (471, 43980), (628, 32985), (733, 28260), (785, 26388), (942, 21990), (1413, 14660), (1466, 14130), (1570, 13194), (1884, 10995), (2199, 9420), (2355, 8796), (2826, 7330), (2932, 7065), (3140, 6597), (3665, 5652), (4398, 4710)]