19741680

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3917}}^1$

素因数の和:3943

約数の個数: 120

約数和(自身を含む): 75789792

約数和(自身を除く): 56048112

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, 3917, 5040, 7834, 11751, 15668, 19585, 23502, 27419, 31336, 35253, 39170, 47004, 54838, 58755, 62672, 70506, 78340, 82257, 94008, 109676, 117510, 137095, 141012, 156680, 164514, 176265, 188016, 219352, 235020, 246771, 274190, 282024, 313360, 329028, 352530, 411285, 438704, 470040, 493542, 548380, 564048, 658056, 705060, 822570, 940080, 987084, 1096760, 1233855, 1316112, 1410120, 1645140, 1974168, 2193520, 2467710, 2820240, 3290280, 3948336, 4935420, 6580560, 9870840, 19741680]

約数ペア:

[(1, 19741680), (2, 9870840), (3, 6580560), (4, 4935420), (5, 3948336), (6, 3290280), (7, 2820240), (8, 2467710), (9, 2193520), (10, 1974168), (12, 1645140), (14, 1410120), (15, 1316112), (16, 1233855), (18, 1096760), (20, 987084), (21, 940080), (24, 822570), (28, 705060), (30, 658056), (35, 564048), (36, 548380), (40, 493542), (42, 470040), (45, 438704), (48, 411285), (56, 352530), (60, 329028), (63, 313360), (70, 282024), (72, 274190), (80, 246771), (84, 235020), (90, 219352), (105, 188016), (112, 176265), (120, 164514), (126, 156680), (140, 141012), (144, 137095), (168, 117510), (180, 109676), (210, 94008), (240, 82257), (252, 78340), (280, 70506), (315, 62672), (336, 58755), (360, 54838), (420, 47004), (504, 39170), (560, 35253), (630, 31336), (720, 27419), (840, 23502), (1008, 19585), (1260, 15668), (1680, 11751), (2520, 7834), (3917, 5040)]