20829060

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:354

約数の個数: 144

約数和(自身を含む): 73661952

約数和(自身を除く): 52832892

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 61, 63, 70, 84, 90, 105, 122, 126, 140, 180, 183, 210, 244, 252, 271, 305, 315, 366, 420, 427, 542, 549, 610, 630, 732, 813, 854, 915, 1084, 1098, 1220, 1260, 1281, 1355, 1626, 1708, 1830, 1897, 2135, 2196, 2439, 2562, 2710, 2745, 3252, 3660, 3794, 3843, 4065, 4270, 4878, 5124, 5420, 5490, 5691, 6405, 7588, 7686, 8130, 8540, 9485, 9756, 10980, 11382, 12195, 12810, 15372, 16260, 16531, 17073, 18970, 19215, 22764, 24390, 25620, 28455, 33062, 34146, 37940, 38430, 48780, 49593, 56910, 66124, 68292, 76860, 82655, 85365, 99186, 113820, 115717, 148779, 165310, 170730, 198372, 231434, 247965, 297558, 330620, 341460, 347151, 462868, 495930, 578585, 595116, 694302, 743895, 991860, 1041453, 1157170, 1388604, 1487790, 1735755, 2082906, 2314340, 2975580, 3471510, 4165812, 5207265, 6943020, 10414530, 20829060]

約数ペア:

[(1, 20829060), (2, 10414530), (3, 6943020), (4, 5207265), (5, 4165812), (6, 3471510), (7, 2975580), (9, 2314340), (10, 2082906), (12, 1735755), (14, 1487790), (15, 1388604), (18, 1157170), (20, 1041453), (21, 991860), (28, 743895), (30, 694302), (35, 595116), (36, 578585), (42, 495930), (45, 462868), (60, 347151), (61, 341460), (63, 330620), (70, 297558), (84, 247965), (90, 231434), (105, 198372), (122, 170730), (126, 165310), (140, 148779), (180, 115717), (183, 113820), (210, 99186), (244, 85365), (252, 82655), (271, 76860), (305, 68292), (315, 66124), (366, 56910), (420, 49593), (427, 48780), (542, 38430), (549, 37940), (610, 34146), (630, 33062), (732, 28455), (813, 25620), (854, 24390), (915, 22764), (1084, 19215), (1098, 18970), (1220, 17073), (1260, 16531), (1281, 16260), (1355, 15372), (1626, 12810), (1708, 12195), (1830, 11382), (1897, 10980), (2135, 9756), (2196, 9485), (2439, 8540), (2562, 8130), (2710, 7686), (2745, 7588), (3252, 6405), (3660, 5691), (3794, 5490), (3843, 5420), (4065, 5124), (4270, 4878)]