64891970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1973}}^1$

素因数の和:2027

約数の個数: 64

約数和(自身を含む): 143265024

約数和(自身を除く): 78373054

約数列:

[1, 2, 5, 10, 11, 13, 22, 23, 26, 46, 55, 65, 110, 115, 130, 143, 230, 253, 286, 299, 506, 598, 715, 1265, 1430, 1495, 1973, 2530, 2990, 3289, 3946, 6578, 9865, 16445, 19730, 21703, 25649, 32890, 43406, 45379, 51298, 90758, 108515, 128245, 217030, 226895, 256490, 282139, 453790, 499169, 564278, 589927, 998338, 1179854, 1410695, 2495845, 2821390, 2949635, 4991690, 5899270, 6489197, 12978394, 32445985, 64891970]

約数ペア:

[(1, 64891970), (2, 32445985), (5, 12978394), (10, 6489197), (11, 5899270), (13, 4991690), (22, 2949635), (23, 2821390), (26, 2495845), (46, 1410695), (55, 1179854), (65, 998338), (110, 589927), (115, 564278), (130, 499169), (143, 453790), (230, 282139), (253, 256490), (286, 226895), (299, 217030), (506, 128245), (598, 108515), (715, 90758), (1265, 51298), (1430, 45379), (1495, 43406), (1973, 32890), (2530, 25649), (2990, 21703), (3289, 19730), (3946, 16445), (6578, 9865)]