28295820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1321}}^1$

素因数の和:1360

約数の個数: 144

約数和(自身を含む): 103940928

約数和(自身を除く): 75645108

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 51, 60, 63, 68, 70, 84, 85, 90, 102, 105, 119, 126, 140, 153, 170, 180, 204, 210, 238, 252, 255, 306, 315, 340, 357, 420, 476, 510, 595, 612, 630, 714, 765, 1020, 1071, 1190, 1260, 1321, 1428, 1530, 1785, 2142, 2380, 2642, 3060, 3570, 3963, 4284, 5284, 5355, 6605, 7140, 7926, 9247, 10710, 11889, 13210, 15852, 18494, 19815, 21420, 22457, 23778, 26420, 27741, 36988, 39630, 44914, 46235, 47556, 55482, 59445, 67371, 79260, 83223, 89828, 92470, 110964, 112285, 118890, 134742, 138705, 157199, 166446, 184940, 202113, 224570, 237780, 269484, 277410, 314398, 332892, 336855, 404226, 416115, 449140, 471597, 554820, 628796, 673710, 785995, 808452, 832230, 943194, 1010565, 1347420, 1414791, 1571990, 1664460, 1886388, 2021130, 2357985, 2829582, 3143980, 4042260, 4715970, 5659164, 7073955, 9431940, 14147910, 28295820]

約数ペア:

[(1, 28295820), (2, 14147910), (3, 9431940), (4, 7073955), (5, 5659164), (6, 4715970), (7, 4042260), (9, 3143980), (10, 2829582), (12, 2357985), (14, 2021130), (15, 1886388), (17, 1664460), (18, 1571990), (20, 1414791), (21, 1347420), (28, 1010565), (30, 943194), (34, 832230), (35, 808452), (36, 785995), (42, 673710), (45, 628796), (51, 554820), (60, 471597), (63, 449140), (68, 416115), (70, 404226), (84, 336855), (85, 332892), (90, 314398), (102, 277410), (105, 269484), (119, 237780), (126, 224570), (140, 202113), (153, 184940), (170, 166446), (180, 157199), (204, 138705), (210, 134742), (238, 118890), (252, 112285), (255, 110964), (306, 92470), (315, 89828), (340, 83223), (357, 79260), (420, 67371), (476, 59445), (510, 55482), (595, 47556), (612, 46235), (630, 44914), (714, 39630), (765, 36988), (1020, 27741), (1071, 26420), (1190, 23778), (1260, 22457), (1321, 21420), (1428, 19815), (1530, 18494), (1785, 15852), (2142, 13210), (2380, 11889), (2642, 10710), (3060, 9247), (3570, 7926), (3963, 7140), (4284, 6605), (5284, 5355)]