19998240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{683}}^1$

素因数の和:762

約数の個数: 96

約数和(自身を含む): 64120896

約数和(自身を除く): 44122656

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 80, 96, 120, 122, 160, 183, 240, 244, 305, 366, 480, 488, 610, 683, 732, 915, 976, 1220, 1366, 1464, 1830, 1952, 2049, 2440, 2732, 2928, 3415, 3660, 4098, 4880, 5464, 5856, 6830, 7320, 8196, 9760, 10245, 10928, 13660, 14640, 16392, 20490, 21856, 27320, 29280, 32784, 40980, 41663, 54640, 65568, 81960, 83326, 109280, 124989, 163920, 166652, 208315, 249978, 327840, 333304, 416630, 499956, 624945, 666608, 833260, 999912, 1249890, 1333216, 1666520, 1999824, 2499780, 3333040, 3999648, 4999560, 6666080, 9999120, 19998240]

約数ペア:

[(1, 19998240), (2, 9999120), (3, 6666080), (4, 4999560), (5, 3999648), (6, 3333040), (8, 2499780), (10, 1999824), (12, 1666520), (15, 1333216), (16, 1249890), (20, 999912), (24, 833260), (30, 666608), (32, 624945), (40, 499956), (48, 416630), (60, 333304), (61, 327840), (80, 249978), (96, 208315), (120, 166652), (122, 163920), (160, 124989), (183, 109280), (240, 83326), (244, 81960), (305, 65568), (366, 54640), (480, 41663), (488, 40980), (610, 32784), (683, 29280), (732, 27320), (915, 21856), (976, 20490), (1220, 16392), (1366, 14640), (1464, 13660), (1830, 10928), (1952, 10245), (2049, 9760), (2440, 8196), (2732, 7320), (2928, 6830), (3415, 5856), (3660, 5464), (4098, 4880)]