20283720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:255

約数の個数: 128

約数和(自身を含む): 65888640

約数和(自身を除く): 45604920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 61, 68, 85, 102, 120, 122, 136, 163, 170, 183, 204, 244, 255, 305, 326, 340, 366, 408, 488, 489, 510, 610, 652, 680, 732, 815, 915, 978, 1020, 1037, 1220, 1304, 1464, 1630, 1830, 1956, 2040, 2074, 2440, 2445, 2771, 3111, 3260, 3660, 3912, 4148, 4890, 5185, 5542, 6222, 6520, 7320, 8296, 8313, 9780, 9943, 10370, 11084, 12444, 13855, 15555, 16626, 19560, 19886, 20740, 22168, 24888, 27710, 29829, 31110, 33252, 39772, 41480, 41565, 49715, 55420, 59658, 62220, 66504, 79544, 83130, 99430, 110840, 119316, 124440, 149145, 166260, 169031, 198860, 238632, 298290, 332520, 338062, 397720, 507093, 596580, 676124, 845155, 1014186, 1193160, 1352248, 1690310, 2028372, 2535465, 3380620, 4056744, 5070930, 6761240, 10141860, 20283720]

約数ペア:

[(1, 20283720), (2, 10141860), (3, 6761240), (4, 5070930), (5, 4056744), (6, 3380620), (8, 2535465), (10, 2028372), (12, 1690310), (15, 1352248), (17, 1193160), (20, 1014186), (24, 845155), (30, 676124), (34, 596580), (40, 507093), (51, 397720), (60, 338062), (61, 332520), (68, 298290), (85, 238632), (102, 198860), (120, 169031), (122, 166260), (136, 149145), (163, 124440), (170, 119316), (183, 110840), (204, 99430), (244, 83130), (255, 79544), (305, 66504), (326, 62220), (340, 59658), (366, 55420), (408, 49715), (488, 41565), (489, 41480), (510, 39772), (610, 33252), (652, 31110), (680, 29829), (732, 27710), (815, 24888), (915, 22168), (978, 20740), (1020, 19886), (1037, 19560), (1220, 16626), (1304, 15555), (1464, 13855), (1630, 12444), (1830, 11084), (1956, 10370), (2040, 9943), (2074, 9780), (2440, 8313), (2445, 8296), (2771, 7320), (3111, 6520), (3260, 6222), (3660, 5542), (3912, 5185), (4148, 4890)]