20404080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1667}}^1$

素因数の和:1703

約数の個数: 120

約数和(自身を含む): 72598032

約数和(自身を除く): 52193952

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 1667, 2040, 2448, 3060, 3334, 4080, 5001, 6120, 6668, 8335, 10002, 12240, 13336, 15003, 16670, 20004, 25005, 26672, 28339, 30006, 33340, 40008, 50010, 56678, 60012, 66680, 75015, 80016, 85017, 100020, 113356, 120024, 133360, 141695, 150030, 170034, 200040, 226712, 240048, 255051, 283390, 300060, 340068, 400080, 425085, 453424, 510102, 566780, 600120, 680136, 850170, 1020204, 1133560, 1200240, 1275255, 1360272, 1700340, 2040408, 2267120, 2550510, 3400680, 4080816, 5101020, 6801360, 10202040, 20404080]

約数ペア:

[(1, 20404080), (2, 10202040), (3, 6801360), (4, 5101020), (5, 4080816), (6, 3400680), (8, 2550510), (9, 2267120), (10, 2040408), (12, 1700340), (15, 1360272), (16, 1275255), (17, 1200240), (18, 1133560), (20, 1020204), (24, 850170), (30, 680136), (34, 600120), (36, 566780), (40, 510102), (45, 453424), (48, 425085), (51, 400080), (60, 340068), (68, 300060), (72, 283390), (80, 255051), (85, 240048), (90, 226712), (102, 200040), (120, 170034), (136, 150030), (144, 141695), (153, 133360), (170, 120024), (180, 113356), (204, 100020), (240, 85017), (255, 80016), (272, 75015), (306, 66680), (340, 60012), (360, 56678), (408, 50010), (510, 40008), (612, 33340), (680, 30006), (720, 28339), (765, 26672), (816, 25005), (1020, 20004), (1224, 16670), (1360, 15003), (1530, 13336), (1667, 12240), (2040, 10002), (2448, 8335), (3060, 6668), (3334, 6120), (4080, 5001)]