20860560

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4139}}^1$

素因数の和:4165

約数の個数: 120

約数和(自身を含む): 80084160

約数和(自身を除く): 59223600

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, 4139, 5040, 8278, 12417, 16556, 20695, 24834, 28973, 33112, 37251, 41390, 49668, 57946, 62085, 66224, 74502, 82780, 86919, 99336, 115892, 124170, 144865, 149004, 165560, 173838, 186255, 198672, 231784, 248340, 260757, 289730, 298008, 331120, 347676, 372510, 434595, 463568, 496680, 521514, 579460, 596016, 695352, 745020, 869190, 993360, 1043028, 1158920, 1303785, 1390704, 1490040, 1738380, 2086056, 2317840, 2607570, 2980080, 3476760, 4172112, 5215140, 6953520, 10430280, 20860560]

約数ペア:

[(1, 20860560), (2, 10430280), (3, 6953520), (4, 5215140), (5, 4172112), (6, 3476760), (7, 2980080), (8, 2607570), (9, 2317840), (10, 2086056), (12, 1738380), (14, 1490040), (15, 1390704), (16, 1303785), (18, 1158920), (20, 1043028), (21, 993360), (24, 869190), (28, 745020), (30, 695352), (35, 596016), (36, 579460), (40, 521514), (42, 496680), (45, 463568), (48, 434595), (56, 372510), (60, 347676), (63, 331120), (70, 298008), (72, 289730), (80, 260757), (84, 248340), (90, 231784), (105, 198672), (112, 186255), (120, 173838), (126, 165560), (140, 149004), (144, 144865), (168, 124170), (180, 115892), (210, 99336), (240, 86919), (252, 82780), (280, 74502), (315, 66224), (336, 62085), (360, 57946), (420, 49668), (504, 41390), (560, 37251), (630, 33112), (720, 28973), (840, 24834), (1008, 20695), (1260, 16556), (1680, 12417), (2520, 8278), (4139, 5040)]