21309960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1103}}^1$

素因数の和:1147

約数の個数: 128

約数和(自身を含む): 76308480

約数和(自身を除く): 54998520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 552, 644, 690, 805, 840, 920, 966, 1103, 1288, 1380, 1610, 1932, 2206, 2415, 2760, 3220, 3309, 3864, 4412, 4830, 5515, 6440, 6618, 7721, 8824, 9660, 11030, 13236, 15442, 16545, 19320, 22060, 23163, 25369, 26472, 30884, 33090, 38605, 44120, 46326, 50738, 61768, 66180, 76107, 77210, 92652, 101476, 115815, 126845, 132360, 152214, 154420, 177583, 185304, 202952, 231630, 253690, 304428, 308840, 355166, 380535, 463260, 507380, 532749, 608856, 710332, 761070, 887915, 926520, 1014760, 1065498, 1420664, 1522140, 1775830, 2130996, 2663745, 3044280, 3551660, 4261992, 5327490, 7103320, 10654980, 21309960]

約数ペア:

[(1, 21309960), (2, 10654980), (3, 7103320), (4, 5327490), (5, 4261992), (6, 3551660), (7, 3044280), (8, 2663745), (10, 2130996), (12, 1775830), (14, 1522140), (15, 1420664), (20, 1065498), (21, 1014760), (23, 926520), (24, 887915), (28, 761070), (30, 710332), (35, 608856), (40, 532749), (42, 507380), (46, 463260), (56, 380535), (60, 355166), (69, 308840), (70, 304428), (84, 253690), (92, 231630), (105, 202952), (115, 185304), (120, 177583), (138, 154420), (140, 152214), (161, 132360), (168, 126845), (184, 115815), (210, 101476), (230, 92652), (276, 77210), (280, 76107), (322, 66180), (345, 61768), (420, 50738), (460, 46326), (483, 44120), (552, 38605), (644, 33090), (690, 30884), (805, 26472), (840, 25369), (920, 23163), (966, 22060), (1103, 19320), (1288, 16545), (1380, 15442), (1610, 13236), (1932, 11030), (2206, 9660), (2415, 8824), (2760, 7721), (3220, 6618), (3309, 6440), (3864, 5515), (4412, 4830)]