638626970

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2083}}^1$

素因数の和:2187

約数の個数: 64

約数和(自身を含む): 1267605504

約数和(自身を除く): 628978534

約数列:

[1, 2, 5, 10, 23, 31, 43, 46, 62, 86, 115, 155, 215, 230, 310, 430, 713, 989, 1333, 1426, 1978, 2083, 2666, 3565, 4166, 4945, 6665, 7130, 9890, 10415, 13330, 20830, 30659, 47909, 61318, 64573, 89569, 95818, 129146, 153295, 179138, 239545, 306590, 322865, 447845, 479090, 645730, 895690, 1485179, 2060087, 2776639, 2970358, 4120174, 5553278, 7425895, 10300435, 13883195, 14851790, 20600870, 27766390, 63862697, 127725394, 319313485, 638626970]

約数ペア:

[(1, 638626970), (2, 319313485), (5, 127725394), (10, 63862697), (23, 27766390), (31, 20600870), (43, 14851790), (46, 13883195), (62, 10300435), (86, 7425895), (115, 5553278), (155, 4120174), (215, 2970358), (230, 2776639), (310, 2060087), (430, 1485179), (713, 895690), (989, 645730), (1333, 479090), (1426, 447845), (1978, 322865), (2083, 306590), (2666, 239545), (3565, 179138), (4166, 153295), (4945, 129146), (6665, 95818), (7130, 89569), (9890, 64573), (10415, 61318), (13330, 47909), (20830, 30659)]