20931120

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4153}}^1$

素因数の和:4179

約数の個数: 120

約数和(自身を含む): 80354976

約数和(自身を除く): 59423856

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4153, 5040, 8306, 12459, 16612, 20765, 24918, 29071, 33224, 37377, 41530, 49836, 58142, 62295, 66448, 74754, 83060, 87213, 99672, 116284, 124590, 145355, 149508, 166120, 174426, 186885, 199344, 232568, 249180, 261639, 290710, 299016, 332240, 348852, 373770, 436065, 465136, 498360, 523278, 581420, 598032, 697704, 747540, 872130, 996720, 1046556, 1162840, 1308195, 1395408, 1495080, 1744260, 2093112, 2325680, 2616390, 2990160, 3488520, 4186224, 5232780, 6977040, 10465560, 20931120]

約数ペア:

[(1, 20931120), (2, 10465560), (3, 6977040), (4, 5232780), (5, 4186224), (6, 3488520), (7, 2990160), (8, 2616390), (9, 2325680), (10, 2093112), (12, 1744260), (14, 1495080), (15, 1395408), (16, 1308195), (18, 1162840), (20, 1046556), (21, 996720), (24, 872130), (28, 747540), (30, 697704), (35, 598032), (36, 581420), (40, 523278), (42, 498360), (45, 465136), (48, 436065), (56, 373770), (60, 348852), (63, 332240), (70, 299016), (72, 290710), (80, 261639), (84, 249180), (90, 232568), (105, 199344), (112, 186885), (120, 174426), (126, 166120), (140, 149508), (144, 145355), (168, 124590), (180, 116284), (210, 99672), (240, 87213), (252, 83060), (280, 74754), (315, 66448), (336, 62295), (360, 58142), (420, 49836), (504, 41530), (560, 37377), (630, 33224), (720, 29071), (840, 24918), (1008, 20765), (1260, 16612), (1680, 12459), (2520, 8306), (4153, 5040)]