64780740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{739}}^1$

素因数の和:1241

約数の個数: 72

約数和(自身を含む): 197171520

約数和(自身を除く): 132390780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 487, 739, 974, 1461, 1478, 1948, 2217, 2435, 2922, 2956, 3695, 4383, 4434, 4870, 5844, 6651, 7305, 7390, 8766, 8868, 9740, 11085, 13302, 14610, 14780, 17532, 21915, 22170, 26604, 29220, 33255, 43830, 44340, 66510, 87660, 133020, 359893, 719786, 1079679, 1439572, 1799465, 2159358, 3239037, 3598930, 4318716, 5398395, 6478074, 7197860, 10796790, 12956148, 16195185, 21593580, 32390370, 64780740]

約数ペア:

[(1, 64780740), (2, 32390370), (3, 21593580), (4, 16195185), (5, 12956148), (6, 10796790), (9, 7197860), (10, 6478074), (12, 5398395), (15, 4318716), (18, 3598930), (20, 3239037), (30, 2159358), (36, 1799465), (45, 1439572), (60, 1079679), (90, 719786), (180, 359893), (487, 133020), (739, 87660), (974, 66510), (1461, 44340), (1478, 43830), (1948, 33255), (2217, 29220), (2435, 26604), (2922, 22170), (2956, 21915), (3695, 17532), (4383, 14780), (4434, 14610), (4870, 13302), (5844, 11085), (6651, 9740), (7305, 8868), (7390, 8766)]