78530540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{727}}^1$

素因数の和:1238

約数の個数: 48

約数和(自身を含む): 180520704

約数和(自身を除く): 101990164

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 491, 727, 982, 1454, 1964, 2455, 2908, 3635, 4910, 5401, 7270, 7997, 9820, 10802, 14540, 15994, 21604, 27005, 31988, 39985, 54010, 79970, 108020, 159940, 356957, 713914, 1427828, 1784785, 3569570, 3926527, 7139140, 7853054, 15706108, 19632635, 39265270, 78530540]

約数ペア:

[(1, 78530540), (2, 39265270), (4, 19632635), (5, 15706108), (10, 7853054), (11, 7139140), (20, 3926527), (22, 3569570), (44, 1784785), (55, 1427828), (110, 713914), (220, 356957), (491, 159940), (727, 108020), (982, 79970), (1454, 54010), (1964, 39985), (2455, 31988), (2908, 27005), (3635, 21604), (4910, 15994), (5401, 14540), (7270, 10802), (7997, 9820)]