19776760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 27397640

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 389, 410, 620, 778, 820, 1240, 1271, 1556, 1640, 1945, 2542, 3112, 3890, 5084, 6355, 7780, 10168, 12059, 12710, 15560, 15949, 24118, 25420, 31898, 48236, 50840, 60295, 63796, 79745, 96472, 120590, 127592, 159490, 241180, 318980, 482360, 494419, 637960, 988838, 1977676, 2472095, 3955352, 4944190, 9888380, 19776760]

約数ペア:

[(1, 19776760), (2, 9888380), (4, 4944190), (5, 3955352), (8, 2472095), (10, 1977676), (20, 988838), (31, 637960), (40, 494419), (41, 482360), (62, 318980), (82, 241180), (124, 159490), (155, 127592), (164, 120590), (205, 96472), (248, 79745), (310, 63796), (328, 60295), (389, 50840), (410, 48236), (620, 31898), (778, 25420), (820, 24118), (1240, 15949), (1271, 15560), (1556, 12710), (1640, 12059), (1945, 10168), (2542, 7780), (3112, 6355), (3890, 5084)]