18057220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 41669208

約数和(自身を除く): 23611988

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 61, 76, 82, 95, 122, 164, 190, 205, 244, 305, 361, 380, 410, 610, 722, 779, 820, 1159, 1220, 1444, 1558, 1805, 2318, 2501, 3116, 3610, 3895, 4636, 5002, 5795, 7220, 7790, 10004, 11590, 12505, 14801, 15580, 22021, 23180, 25010, 29602, 44042, 47519, 50020, 59204, 74005, 88084, 95038, 110105, 148010, 190076, 220210, 237595, 296020, 440420, 475190, 902861, 950380, 1805722, 3611444, 4514305, 9028610, 18057220]

約数ペア:

[(1, 18057220), (2, 9028610), (4, 4514305), (5, 3611444), (10, 1805722), (19, 950380), (20, 902861), (38, 475190), (41, 440420), (61, 296020), (76, 237595), (82, 220210), (95, 190076), (122, 148010), (164, 110105), (190, 95038), (205, 88084), (244, 74005), (305, 59204), (361, 50020), (380, 47519), (410, 44042), (610, 29602), (722, 25010), (779, 23180), (820, 22021), (1159, 15580), (1220, 14801), (1444, 12505), (1558, 11590), (1805, 10004), (2318, 7790), (2501, 7220), (3116, 5795), (3610, 5002), (3895, 4636)]