81641290

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 162570240

約数和(自身を除く): 80928950

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 83, 95, 155, 166, 167, 190, 310, 334, 415, 589, 830, 835, 1178, 1577, 1670, 2573, 2945, 3154, 3173, 5146, 5177, 5890, 6346, 7885, 10354, 12865, 13861, 15770, 15865, 25730, 25885, 27722, 31730, 48887, 51770, 69305, 97774, 98363, 138610, 196726, 244435, 263359, 429691, 488870, 491815, 526718, 859382, 983630, 1316795, 2148455, 2633590, 4296910, 8164129, 16328258, 40820645, 81641290]

約数ペア:

[(1, 81641290), (2, 40820645), (5, 16328258), (10, 8164129), (19, 4296910), (31, 2633590), (38, 2148455), (62, 1316795), (83, 983630), (95, 859382), (155, 526718), (166, 491815), (167, 488870), (190, 429691), (310, 263359), (334, 244435), (415, 196726), (589, 138610), (830, 98363), (835, 97774), (1178, 69305), (1577, 51770), (1670, 48887), (2573, 31730), (2945, 27722), (3154, 25885), (3173, 25730), (5146, 15865), (5177, 15770), (5890, 13861), (6346, 12865), (7885, 10354)]