21499380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 75688704

約数和(自身を除く): 54189324

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, 113, 126, 140, 151, 180, 210, 226, 252, 302, 315, 339, 420, 452, 453, 565, 604, 630, 678, 755, 791, 906, 1017, 1057, 1130, 1260, 1356, 1359, 1510, 1582, 1695, 1812, 2034, 2114, 2260, 2265, 2373, 2718, 3020, 3164, 3171, 3390, 3955, 4068, 4228, 4530, 4746, 5085, 5285, 5436, 6342, 6780, 6795, 7119, 7910, 9060, 9492, 9513, 10170, 10570, 11865, 12684, 13590, 14238, 15820, 15855, 17063, 19026, 20340, 21140, 23730, 27180, 28476, 31710, 34126, 35595, 38052, 47460, 47565, 51189, 63420, 68252, 71190, 85315, 95130, 102378, 119441, 142380, 153567, 170630, 190260, 204756, 238882, 255945, 307134, 341260, 358323, 477764, 511890, 597205, 614268, 716646, 767835, 1023780, 1074969, 1194410, 1433292, 1535670, 1791615, 2149938, 2388820, 3071340, 3583230, 4299876, 5374845, 7166460, 10749690, 21499380]

約数ペア:

[(1, 21499380), (2, 10749690), (3, 7166460), (4, 5374845), (5, 4299876), (6, 3583230), (7, 3071340), (9, 2388820), (10, 2149938), (12, 1791615), (14, 1535670), (15, 1433292), (18, 1194410), (20, 1074969), (21, 1023780), (28, 767835), (30, 716646), (35, 614268), (36, 597205), (42, 511890), (45, 477764), (60, 358323), (63, 341260), (70, 307134), (84, 255945), (90, 238882), (105, 204756), (113, 190260), (126, 170630), (140, 153567), (151, 142380), (180, 119441), (210, 102378), (226, 95130), (252, 85315), (302, 71190), (315, 68252), (339, 63420), (420, 51189), (452, 47565), (453, 47460), (565, 38052), (604, 35595), (630, 34126), (678, 31710), (755, 28476), (791, 27180), (906, 23730), (1017, 21140), (1057, 20340), (1130, 19026), (1260, 17063), (1356, 15855), (1359, 15820), (1510, 14238), (1582, 13590), (1695, 12684), (1812, 11865), (2034, 10570), (2114, 10170), (2260, 9513), (2265, 9492), (2373, 9060), (2718, 7910), (3020, 7119), (3164, 6795), (3171, 6780), (3390, 6342), (3955, 5436), (4068, 5285), (4228, 5085), (4530, 4746)]