19805040

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:248

約数の個数: 160

約数和(自身を含む): 69906240

約数和(自身を除く): 50101200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 53, 54, 60, 72, 80, 90, 106, 108, 120, 135, 144, 159, 173, 180, 212, 216, 240, 265, 270, 318, 346, 360, 424, 432, 477, 519, 530, 540, 636, 692, 720, 795, 848, 865, 954, 1038, 1060, 1080, 1272, 1384, 1431, 1557, 1590, 1730, 1908, 2076, 2120, 2160, 2385, 2544, 2595, 2768, 2862, 3114, 3180, 3460, 3816, 4152, 4240, 4671, 4770, 5190, 5724, 6228, 6360, 6920, 7155, 7632, 7785, 8304, 9169, 9342, 9540, 10380, 11448, 12456, 12720, 13840, 14310, 15570, 18338, 18684, 19080, 20760, 22896, 23355, 24912, 27507, 28620, 31140, 36676, 37368, 38160, 41520, 45845, 46710, 55014, 57240, 62280, 73352, 74736, 82521, 91690, 93420, 110028, 114480, 124560, 137535, 146704, 165042, 183380, 186840, 220056, 247563, 275070, 330084, 366760, 373680, 412605, 440112, 495126, 550140, 660168, 733520, 825210, 990252, 1100280, 1237815, 1320336, 1650420, 1980504, 2200560, 2475630, 3300840, 3961008, 4951260, 6601680, 9902520, 19805040]

約数ペア:

[(1, 19805040), (2, 9902520), (3, 6601680), (4, 4951260), (5, 3961008), (6, 3300840), (8, 2475630), (9, 2200560), (10, 1980504), (12, 1650420), (15, 1320336), (16, 1237815), (18, 1100280), (20, 990252), (24, 825210), (27, 733520), (30, 660168), (36, 550140), (40, 495126), (45, 440112), (48, 412605), (53, 373680), (54, 366760), (60, 330084), (72, 275070), (80, 247563), (90, 220056), (106, 186840), (108, 183380), (120, 165042), (135, 146704), (144, 137535), (159, 124560), (173, 114480), (180, 110028), (212, 93420), (216, 91690), (240, 82521), (265, 74736), (270, 73352), (318, 62280), (346, 57240), (360, 55014), (424, 46710), (432, 45845), (477, 41520), (519, 38160), (530, 37368), (540, 36676), (636, 31140), (692, 28620), (720, 27507), (795, 24912), (848, 23355), (865, 22896), (954, 20760), (1038, 19080), (1060, 18684), (1080, 18338), (1272, 15570), (1384, 14310), (1431, 13840), (1557, 12720), (1590, 12456), (1730, 11448), (1908, 10380), (2076, 9540), (2120, 9342), (2160, 9169), (2385, 8304), (2544, 7785), (2595, 7632), (2768, 7155), (2862, 6920), (3114, 6360), (3180, 6228), (3460, 5724), (3816, 5190), (4152, 4770), (4240, 4671)]