1814540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1026

約数の個数: 48

約数和(自身を含む): 4694592

約数和(自身を除く): 2880052

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 997, 1820, 1994, 3988, 4985, 6979, 9970, 12961, 13958, 19940, 25922, 27916, 34895, 51844, 64805, 69790, 90727, 129610, 139580, 181454, 259220, 362908, 453635, 907270, 1814540]

約数ペア:

[(1, 1814540), (2, 907270), (4, 453635), (5, 362908), (7, 259220), (10, 181454), (13, 139580), (14, 129610), (20, 90727), (26, 69790), (28, 64805), (35, 51844), (52, 34895), (65, 27916), (70, 25922), (91, 19940), (130, 13958), (140, 12961), (182, 9970), (260, 6979), (364, 4985), (455, 3988), (910, 1994), (997, 1820)]