20877840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{271}}^1$

素因数の和:397

約数の個数: 120

約数和(自身を含む): 71031168

約数和(自身を除く): 50153328

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 107, 120, 144, 180, 214, 240, 271, 321, 360, 428, 535, 542, 642, 720, 813, 856, 963, 1070, 1084, 1284, 1355, 1605, 1626, 1712, 1926, 2140, 2168, 2439, 2568, 2710, 3210, 3252, 3852, 4065, 4280, 4336, 4815, 4878, 5136, 5420, 6420, 6504, 7704, 8130, 8560, 9630, 9756, 10840, 12195, 12840, 13008, 15408, 16260, 19260, 19512, 21680, 24390, 25680, 28997, 32520, 38520, 39024, 48780, 57994, 65040, 77040, 86991, 97560, 115988, 144985, 173982, 195120, 231976, 260973, 289970, 347964, 434955, 463952, 521946, 579940, 695928, 869910, 1043892, 1159880, 1304865, 1391856, 1739820, 2087784, 2319760, 2609730, 3479640, 4175568, 5219460, 6959280, 10438920, 20877840]

約数ペア:

[(1, 20877840), (2, 10438920), (3, 6959280), (4, 5219460), (5, 4175568), (6, 3479640), (8, 2609730), (9, 2319760), (10, 2087784), (12, 1739820), (15, 1391856), (16, 1304865), (18, 1159880), (20, 1043892), (24, 869910), (30, 695928), (36, 579940), (40, 521946), (45, 463952), (48, 434955), (60, 347964), (72, 289970), (80, 260973), (90, 231976), (107, 195120), (120, 173982), (144, 144985), (180, 115988), (214, 97560), (240, 86991), (271, 77040), (321, 65040), (360, 57994), (428, 48780), (535, 39024), (542, 38520), (642, 32520), (720, 28997), (813, 25680), (856, 24390), (963, 21680), (1070, 19512), (1084, 19260), (1284, 16260), (1355, 15408), (1605, 13008), (1626, 12840), (1712, 12195), (1926, 10840), (2140, 9756), (2168, 9630), (2439, 8560), (2568, 8130), (2710, 7704), (3210, 6504), (3252, 6420), (3852, 5420), (4065, 5136), (4280, 4878), (4336, 4815)]