25196220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19997}}^1$

素因数の和:20019

約数の個数: 72

約数和(自身を含む): 87351264

約数和(自身を除く): 62155044

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 19997, 39994, 59991, 79988, 99985, 119982, 139979, 179973, 199970, 239964, 279958, 299955, 359946, 399940, 419937, 559916, 599910, 699895, 719892, 839874, 899865, 1199820, 1259811, 1399790, 1679748, 1799730, 2099685, 2519622, 2799580, 3599460, 4199370, 5039244, 6299055, 8398740, 12598110, 25196220]

約数ペア:

[(1, 25196220), (2, 12598110), (3, 8398740), (4, 6299055), (5, 5039244), (6, 4199370), (7, 3599460), (9, 2799580), (10, 2519622), (12, 2099685), (14, 1799730), (15, 1679748), (18, 1399790), (20, 1259811), (21, 1199820), (28, 899865), (30, 839874), (35, 719892), (36, 699895), (42, 599910), (45, 559916), (60, 419937), (63, 399940), (70, 359946), (84, 299955), (90, 279958), (105, 239964), (126, 199970), (140, 179973), (180, 139979), (210, 119982), (252, 99985), (315, 79988), (420, 59991), (630, 39994), (1260, 19997)]