20658260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 52496640

約数和(自身を除く): 31838380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 59, 61, 70, 82, 118, 122, 140, 164, 205, 236, 244, 287, 295, 305, 410, 413, 427, 574, 590, 610, 820, 826, 854, 1148, 1180, 1220, 1435, 1652, 1708, 2065, 2135, 2419, 2501, 2870, 3599, 4130, 4270, 4838, 5002, 5740, 7198, 8260, 8540, 9676, 10004, 12095, 12505, 14396, 16933, 17507, 17995, 24190, 25010, 25193, 33866, 35014, 35990, 48380, 50020, 50386, 67732, 70028, 71980, 84665, 87535, 100772, 125965, 147559, 169330, 175070, 251930, 295118, 338660, 350140, 503860, 590236, 737795, 1032913, 1475590, 2065826, 2951180, 4131652, 5164565, 10329130, 20658260]

約数ペア:

[(1, 20658260), (2, 10329130), (4, 5164565), (5, 4131652), (7, 2951180), (10, 2065826), (14, 1475590), (20, 1032913), (28, 737795), (35, 590236), (41, 503860), (59, 350140), (61, 338660), (70, 295118), (82, 251930), (118, 175070), (122, 169330), (140, 147559), (164, 125965), (205, 100772), (236, 87535), (244, 84665), (287, 71980), (295, 70028), (305, 67732), (410, 50386), (413, 50020), (427, 48380), (574, 35990), (590, 35014), (610, 33866), (820, 25193), (826, 25010), (854, 24190), (1148, 17995), (1180, 17507), (1220, 16933), (1435, 14396), (1652, 12505), (1708, 12095), (2065, 10004), (2135, 9676), (2419, 8540), (2501, 8260), (2870, 7198), (3599, 5740), (4130, 5002), (4270, 4838)]