21981000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{431}}^1$

素因数の和:472

約数の個数: 128

約数和(自身を含む): 72783360

約数和(自身を除く): 50802360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 25, 30, 34, 40, 50, 51, 60, 68, 75, 85, 100, 102, 120, 125, 136, 150, 170, 200, 204, 250, 255, 300, 340, 375, 408, 425, 431, 500, 510, 600, 680, 750, 850, 862, 1000, 1020, 1275, 1293, 1500, 1700, 1724, 2040, 2125, 2155, 2550, 2586, 3000, 3400, 3448, 4250, 4310, 5100, 5172, 6375, 6465, 7327, 8500, 8620, 10200, 10344, 10775, 12750, 12930, 14654, 17000, 17240, 21550, 21981, 25500, 25860, 29308, 32325, 36635, 43100, 43962, 51000, 51720, 53875, 58616, 64650, 73270, 86200, 87924, 107750, 109905, 129300, 146540, 161625, 175848, 183175, 215500, 219810, 258600, 293080, 323250, 366350, 431000, 439620, 549525, 646500, 732700, 879240, 915875, 1099050, 1293000, 1465400, 1831750, 2198100, 2747625, 3663500, 4396200, 5495250, 7327000, 10990500, 21981000]

約数ペア:

[(1, 21981000), (2, 10990500), (3, 7327000), (4, 5495250), (5, 4396200), (6, 3663500), (8, 2747625), (10, 2198100), (12, 1831750), (15, 1465400), (17, 1293000), (20, 1099050), (24, 915875), (25, 879240), (30, 732700), (34, 646500), (40, 549525), (50, 439620), (51, 431000), (60, 366350), (68, 323250), (75, 293080), (85, 258600), (100, 219810), (102, 215500), (120, 183175), (125, 175848), (136, 161625), (150, 146540), (170, 129300), (200, 109905), (204, 107750), (250, 87924), (255, 86200), (300, 73270), (340, 64650), (375, 58616), (408, 53875), (425, 51720), (431, 51000), (500, 43962), (510, 43100), (600, 36635), (680, 32325), (750, 29308), (850, 25860), (862, 25500), (1000, 21981), (1020, 21550), (1275, 17240), (1293, 17000), (1500, 14654), (1700, 12930), (1724, 12750), (2040, 10775), (2125, 10344), (2155, 10200), (2550, 8620), (2586, 8500), (3000, 7327), (3400, 6465), (3448, 6375), (4250, 5172), (4310, 5100)]