66964580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 144365760

約数和(自身を除く): 77401180

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 131, 244, 262, 305, 419, 524, 610, 655, 838, 1220, 1310, 1676, 2095, 2620, 4190, 7991, 8380, 15982, 25559, 31964, 39955, 51118, 54889, 79910, 102236, 109778, 127795, 159820, 219556, 255590, 274445, 511180, 548890, 1097780, 3348229, 6696458, 13392916, 16741145, 33482290, 66964580]

約数ペア:

[(1, 66964580), (2, 33482290), (4, 16741145), (5, 13392916), (10, 6696458), (20, 3348229), (61, 1097780), (122, 548890), (131, 511180), (244, 274445), (262, 255590), (305, 219556), (419, 159820), (524, 127795), (610, 109778), (655, 102236), (838, 79910), (1220, 54889), (1310, 51118), (1676, 39955), (2095, 31964), (2620, 25559), (4190, 15982), (7991, 8380)]