20311720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 55520640

約数和(自身を除く): 35208920

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 53, 55, 65, 67, 88, 104, 106, 110, 130, 134, 143, 212, 220, 260, 265, 268, 286, 335, 424, 440, 520, 530, 536, 572, 583, 670, 689, 715, 737, 871, 1060, 1144, 1166, 1340, 1378, 1430, 1474, 1742, 2120, 2332, 2680, 2756, 2860, 2915, 2948, 3445, 3484, 3551, 3685, 4355, 4664, 5512, 5720, 5830, 5896, 6890, 6968, 7102, 7370, 7579, 8710, 9581, 11660, 13780, 14204, 14740, 15158, 17420, 17755, 19162, 23320, 27560, 28408, 29480, 30316, 34840, 35510, 37895, 38324, 39061, 46163, 47905, 60632, 71020, 75790, 76648, 78122, 92326, 95810, 142040, 151580, 156244, 184652, 191620, 195305, 230815, 303160, 312488, 369304, 383240, 390610, 461630, 507793, 781220, 923260, 1015586, 1562440, 1846520, 2031172, 2538965, 4062344, 5077930, 10155860, 20311720]

約数ペア:

[(1, 20311720), (2, 10155860), (4, 5077930), (5, 4062344), (8, 2538965), (10, 2031172), (11, 1846520), (13, 1562440), (20, 1015586), (22, 923260), (26, 781220), (40, 507793), (44, 461630), (52, 390610), (53, 383240), (55, 369304), (65, 312488), (67, 303160), (88, 230815), (104, 195305), (106, 191620), (110, 184652), (130, 156244), (134, 151580), (143, 142040), (212, 95810), (220, 92326), (260, 78122), (265, 76648), (268, 75790), (286, 71020), (335, 60632), (424, 47905), (440, 46163), (520, 39061), (530, 38324), (536, 37895), (572, 35510), (583, 34840), (670, 30316), (689, 29480), (715, 28408), (737, 27560), (871, 23320), (1060, 19162), (1144, 17755), (1166, 17420), (1340, 15158), (1378, 14740), (1430, 14204), (1474, 13780), (1742, 11660), (2120, 9581), (2332, 8710), (2680, 7579), (2756, 7370), (2860, 7102), (2915, 6968), (2948, 6890), (3445, 5896), (3484, 5830), (3551, 5720), (3685, 5512), (4355, 4664)]