20428560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1669}}^1$

素因数の和:1705

約数の個数: 120

約数和(自身を含む): 72685080

約数和(自身を除く): 52256520

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, 1669, 2040, 2448, 3060, 3338, 4080, 5007, 6120, 6676, 8345, 10014, 12240, 13352, 15021, 16690, 20028, 25035, 26704, 28373, 30042, 33380, 40056, 50070, 56746, 60084, 66760, 75105, 80112, 85119, 100140, 113492, 120168, 133520, 141865, 150210, 170238, 200280, 226984, 240336, 255357, 283730, 300420, 340476, 400560, 425595, 453968, 510714, 567460, 600840, 680952, 851190, 1021428, 1134920, 1201680, 1276785, 1361904, 1702380, 2042856, 2269840, 2553570, 3404760, 4085712, 5107140, 6809520, 10214280, 20428560]

約数ペア:

[(1, 20428560), (2, 10214280), (3, 6809520), (4, 5107140), (5, 4085712), (6, 3404760), (8, 2553570), (9, 2269840), (10, 2042856), (12, 1702380), (15, 1361904), (16, 1276785), (17, 1201680), (18, 1134920), (20, 1021428), (24, 851190), (30, 680952), (34, 600840), (36, 567460), (40, 510714), (45, 453968), (48, 425595), (51, 400560), (60, 340476), (68, 300420), (72, 283730), (80, 255357), (85, 240336), (90, 226984), (102, 200280), (120, 170238), (136, 150210), (144, 141865), (153, 133520), (170, 120168), (180, 113492), (204, 100140), (240, 85119), (255, 80112), (272, 75105), (306, 66760), (340, 60084), (360, 56746), (408, 50070), (510, 40056), (612, 33380), (680, 30042), (720, 28373), (765, 26704), (816, 25035), (1020, 20028), (1224, 16690), (1360, 15021), (1530, 13352), (1669, 12240), (2040, 10014), (2448, 8345), (3060, 6676), (3338, 6120), (4080, 5007)]