1920757520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:625

約数の個数: 160

約数和(自身を含む): 5069675520

約数和(自身を除く): 3148918000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 181, 220, 248, 310, 341, 362, 389, 440, 496, 620, 682, 724, 778, 880, 905, 1240, 1364, 1448, 1556, 1705, 1810, 1945, 1991, 2480, 2728, 2896, 3112, 3410, 3620, 3890, 3982, 4279, 5456, 5611, 6224, 6820, 7240, 7780, 7964, 8558, 9955, 11222, 12059, 13640, 14480, 15560, 15928, 17116, 19910, 21395, 22444, 24118, 27280, 28055, 31120, 31856, 34232, 39820, 42790, 44888, 48236, 56110, 60295, 61721, 68464, 70409, 79640, 85580, 89776, 96472, 112220, 120590, 123442, 132649, 140818, 159280, 171160, 192944, 224440, 241180, 246884, 265298, 281636, 308605, 342320, 352045, 448880, 482360, 493768, 530596, 563272, 617210, 663245, 704090, 774499, 964720, 987536, 1061192, 1126544, 1234420, 1326490, 1408180, 1548998, 2122384, 2182679, 2468840, 2652980, 2816360, 3097996, 3872495, 4365358, 4937680, 5305960, 5632720, 6195992, 7744990, 8730716, 10611920, 10913395, 12391984, 15489980, 17461432, 21826790, 24009469, 30979960, 34922864, 43653580, 48018938, 61959920, 87307160, 96037876, 120047345, 174614320, 192075752, 240094690, 384151504, 480189380, 960378760, 1920757520]

約数ペア:

[(1, 1920757520), (2, 960378760), (4, 480189380), (5, 384151504), (8, 240094690), (10, 192075752), (11, 174614320), (16, 120047345), (20, 96037876), (22, 87307160), (31, 61959920), (40, 48018938), (44, 43653580), (55, 34922864), (62, 30979960), (80, 24009469), (88, 21826790), (110, 17461432), (124, 15489980), (155, 12391984), (176, 10913395), (181, 10611920), (220, 8730716), (248, 7744990), (310, 6195992), (341, 5632720), (362, 5305960), (389, 4937680), (440, 4365358), (496, 3872495), (620, 3097996), (682, 2816360), (724, 2652980), (778, 2468840), (880, 2182679), (905, 2122384), (1240, 1548998), (1364, 1408180), (1448, 1326490), (1556, 1234420), (1705, 1126544), (1810, 1061192), (1945, 987536), (1991, 964720), (2480, 774499), (2728, 704090), (2896, 663245), (3112, 617210), (3410, 563272), (3620, 530596), (3890, 493768), (3982, 482360), (4279, 448880), (5456, 352045), (5611, 342320), (6224, 308605), (6820, 281636), (7240, 265298), (7780, 246884), (7964, 241180), (8558, 224440), (9955, 192944), (11222, 171160), (12059, 159280), (13640, 140818), (14480, 132649), (15560, 123442), (15928, 120590), (17116, 112220), (19910, 96472), (21395, 89776), (22444, 85580), (24118, 79640), (27280, 70409), (28055, 68464), (31120, 61721), (31856, 60295), (34232, 56110), (39820, 48236), (42790, 44888)]