220220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1$

素因数の和:51

約数の個数: 72

約数和(自身を含む): 625632

約数和(自身を除く): 405412

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 121, 130, 140, 143, 154, 182, 220, 242, 260, 286, 308, 364, 385, 455, 484, 572, 605, 715, 770, 847, 910, 1001, 1210, 1430, 1540, 1573, 1694, 1820, 2002, 2420, 2860, 3146, 3388, 4004, 4235, 5005, 6292, 7865, 8470, 10010, 11011, 15730, 16940, 20020, 22022, 31460, 44044, 55055, 110110, 220220]

約数ペア:

[(1, 220220), (2, 110110), (4, 55055), (5, 44044), (7, 31460), (10, 22022), (11, 20020), (13, 16940), (14, 15730), (20, 11011), (22, 10010), (26, 8470), (28, 7865), (35, 6292), (44, 5005), (52, 4235), (55, 4004), (65, 3388), (70, 3146), (77, 2860), (91, 2420), (110, 2002), (121, 1820), (130, 1694), (140, 1573), (143, 1540), (154, 1430), (182, 1210), (220, 1001), (242, 910), (260, 847), (286, 770), (308, 715), (364, 605), (385, 572), (455, 484)]