219311720

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{53231}}^1$

素因数の和:53345

約数の個数: 32

約数和(自身を含む): 498251520

約数和(自身を除く): 278939800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 53231, 106462, 212924, 266155, 425848, 532310, 1064620, 2129240, 5482793, 10965586, 21931172, 27413965, 43862344, 54827930, 109655860, 219311720]

約数ペア:

[(1, 219311720), (2, 109655860), (4, 54827930), (5, 43862344), (8, 27413965), (10, 21931172), (20, 10965586), (40, 5482793), (103, 2129240), (206, 1064620), (412, 532310), (515, 425848), (824, 266155), (1030, 212924), (2060, 106462), (4120, 53231)]