51881720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1933}}^1$

素因数の和:2016

約数の個数: 64

約数和(自身を含む): 129500640

約数和(自身を除く): 77618920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 1220, 1342, 1933, 2440, 2684, 3355, 3866, 5368, 6710, 7732, 9665, 13420, 15464, 19330, 21263, 26840, 38660, 42526, 77320, 85052, 106315, 117913, 170104, 212630, 235826, 425260, 471652, 589565, 850520, 943304, 1179130, 1297043, 2358260, 2594086, 4716520, 5188172, 6485215, 10376344, 12970430, 25940860, 51881720]

約数ペア:

[(1, 51881720), (2, 25940860), (4, 12970430), (5, 10376344), (8, 6485215), (10, 5188172), (11, 4716520), (20, 2594086), (22, 2358260), (40, 1297043), (44, 1179130), (55, 943304), (61, 850520), (88, 589565), (110, 471652), (122, 425260), (220, 235826), (244, 212630), (305, 170104), (440, 117913), (488, 106315), (610, 85052), (671, 77320), (1220, 42526), (1342, 38660), (1933, 26840), (2440, 21263), (2684, 19330), (3355, 15464), (3866, 13420), (5368, 9665), (6710, 7732)]