20738340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1$

素因数の和:282

約数の個数: 144

約数和(自身を含む): 73032960

約数和(自身を除く): 52294620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 109, 126, 140, 151, 180, 210, 218, 252, 302, 315, 327, 420, 436, 453, 545, 604, 630, 654, 755, 763, 906, 981, 1057, 1090, 1260, 1308, 1359, 1510, 1526, 1635, 1812, 1962, 2114, 2180, 2265, 2289, 2718, 3020, 3052, 3171, 3270, 3815, 3924, 4228, 4530, 4578, 4905, 5285, 5436, 6342, 6540, 6795, 6867, 7630, 9060, 9156, 9513, 9810, 10570, 11445, 12684, 13590, 13734, 15260, 15855, 16459, 19026, 19620, 21140, 22890, 27180, 27468, 31710, 32918, 34335, 38052, 45780, 47565, 49377, 63420, 65836, 68670, 82295, 95130, 98754, 115213, 137340, 148131, 164590, 190260, 197508, 230426, 246885, 296262, 329180, 345639, 460852, 493770, 576065, 592524, 691278, 740655, 987540, 1036917, 1152130, 1382556, 1481310, 1728195, 2073834, 2304260, 2962620, 3456390, 4147668, 5184585, 6912780, 10369170, 20738340]

約数ペア:

[(1, 20738340), (2, 10369170), (3, 6912780), (4, 5184585), (5, 4147668), (6, 3456390), (7, 2962620), (9, 2304260), (10, 2073834), (12, 1728195), (14, 1481310), (15, 1382556), (18, 1152130), (20, 1036917), (21, 987540), (28, 740655), (30, 691278), (35, 592524), (36, 576065), (42, 493770), (45, 460852), (60, 345639), (63, 329180), (70, 296262), (84, 246885), (90, 230426), (105, 197508), (109, 190260), (126, 164590), (140, 148131), (151, 137340), (180, 115213), (210, 98754), (218, 95130), (252, 82295), (302, 68670), (315, 65836), (327, 63420), (420, 49377), (436, 47565), (453, 45780), (545, 38052), (604, 34335), (630, 32918), (654, 31710), (755, 27468), (763, 27180), (906, 22890), (981, 21140), (1057, 19620), (1090, 19026), (1260, 16459), (1308, 15855), (1359, 15260), (1510, 13734), (1526, 13590), (1635, 12684), (1812, 11445), (1962, 10570), (2114, 9810), (2180, 9513), (2265, 9156), (2289, 9060), (2718, 7630), (3020, 6867), (3052, 6795), (3171, 6540), (3270, 6342), (3815, 5436), (3924, 5285), (4228, 4905), (4530, 4578)]