87841220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{809}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 189831600

約数和(自身を除く): 101990380

約数列:

[1, 2, 4, 5, 10, 20, 61, 89, 122, 178, 244, 305, 356, 445, 610, 809, 890, 1220, 1618, 1780, 3236, 4045, 5429, 8090, 10858, 16180, 21716, 27145, 49349, 54290, 72001, 98698, 108580, 144002, 197396, 246745, 288004, 360005, 493490, 720010, 986980, 1440020, 4392061, 8784122, 17568244, 21960305, 43920610, 87841220]

約数ペア:

[(1, 87841220), (2, 43920610), (4, 21960305), (5, 17568244), (10, 8784122), (20, 4392061), (61, 1440020), (89, 986980), (122, 720010), (178, 493490), (244, 360005), (305, 288004), (356, 246745), (445, 197396), (610, 144002), (809, 108580), (890, 98698), (1220, 72001), (1618, 54290), (1780, 49349), (3236, 27145), (4045, 21716), (5429, 16180), (8090, 10858)]