19985040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{677}}^1$

素因数の和:737

約数の個数: 120

約数和(自身を含む): 68854968

約数和(自身を除く): 48869928

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 120, 123, 144, 164, 180, 205, 240, 246, 328, 360, 369, 410, 492, 615, 656, 677, 720, 738, 820, 984, 1230, 1354, 1476, 1640, 1845, 1968, 2031, 2460, 2708, 2952, 3280, 3385, 3690, 4062, 4920, 5416, 5904, 6093, 6770, 7380, 8124, 9840, 10155, 10832, 12186, 13540, 14760, 16248, 20310, 24372, 27080, 27757, 29520, 30465, 32496, 40620, 48744, 54160, 55514, 60930, 81240, 83271, 97488, 111028, 121860, 138785, 162480, 166542, 222056, 243720, 249813, 277570, 333084, 416355, 444112, 487440, 499626, 555140, 666168, 832710, 999252, 1110280, 1249065, 1332336, 1665420, 1998504, 2220560, 2498130, 3330840, 3997008, 4996260, 6661680, 9992520, 19985040]

約数ペア:

[(1, 19985040), (2, 9992520), (3, 6661680), (4, 4996260), (5, 3997008), (6, 3330840), (8, 2498130), (9, 2220560), (10, 1998504), (12, 1665420), (15, 1332336), (16, 1249065), (18, 1110280), (20, 999252), (24, 832710), (30, 666168), (36, 555140), (40, 499626), (41, 487440), (45, 444112), (48, 416355), (60, 333084), (72, 277570), (80, 249813), (82, 243720), (90, 222056), (120, 166542), (123, 162480), (144, 138785), (164, 121860), (180, 111028), (205, 97488), (240, 83271), (246, 81240), (328, 60930), (360, 55514), (369, 54160), (410, 48744), (492, 40620), (615, 32496), (656, 30465), (677, 29520), (720, 27757), (738, 27080), (820, 24372), (984, 20310), (1230, 16248), (1354, 14760), (1476, 13540), (1640, 12186), (1845, 10832), (1968, 10155), (2031, 9840), (2460, 8124), (2708, 7380), (2952, 6770), (3280, 6093), (3385, 5904), (3690, 5416), (4062, 4920)]