21338520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:238

約数の個数: 192

約数和(自身を含む): 78796800

約数和(自身を除く): 57458280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 49, 56, 57, 60, 70, 76, 84, 95, 98, 105, 114, 120, 133, 140, 147, 152, 168, 190, 191, 196, 210, 228, 245, 266, 280, 285, 294, 380, 382, 392, 399, 420, 456, 490, 532, 570, 573, 588, 665, 735, 760, 764, 798, 840, 931, 955, 980, 1064, 1140, 1146, 1176, 1330, 1337, 1470, 1528, 1596, 1862, 1910, 1960, 1995, 2280, 2292, 2660, 2674, 2793, 2865, 2940, 3192, 3629, 3724, 3820, 3990, 4011, 4584, 4655, 5320, 5348, 5586, 5730, 5880, 6685, 7258, 7448, 7640, 7980, 8022, 9310, 9359, 10696, 10887, 11172, 11460, 13370, 13965, 14516, 15960, 16044, 18145, 18620, 18718, 20055, 21774, 22344, 22920, 25403, 26740, 27930, 28077, 29032, 32088, 36290, 37240, 37436, 40110, 43548, 46795, 50806, 53480, 54435, 55860, 56154, 72580, 74872, 76209, 80220, 87096, 93590, 101612, 108870, 111720, 112308, 127015, 140385, 145160, 152418, 160440, 177821, 187180, 203224, 217740, 224616, 254030, 280770, 304836, 355642, 374360, 381045, 435480, 508060, 533463, 561540, 609672, 711284, 762090, 889105, 1016120, 1066926, 1123080, 1422568, 1524180, 1778210, 2133852, 2667315, 3048360, 3556420, 4267704, 5334630, 7112840, 10669260, 21338520]

約数ペア:

[(1, 21338520), (2, 10669260), (3, 7112840), (4, 5334630), (5, 4267704), (6, 3556420), (7, 3048360), (8, 2667315), (10, 2133852), (12, 1778210), (14, 1524180), (15, 1422568), (19, 1123080), (20, 1066926), (21, 1016120), (24, 889105), (28, 762090), (30, 711284), (35, 609672), (38, 561540), (40, 533463), (42, 508060), (49, 435480), (56, 381045), (57, 374360), (60, 355642), (70, 304836), (76, 280770), (84, 254030), (95, 224616), (98, 217740), (105, 203224), (114, 187180), (120, 177821), (133, 160440), (140, 152418), (147, 145160), (152, 140385), (168, 127015), (190, 112308), (191, 111720), (196, 108870), (210, 101612), (228, 93590), (245, 87096), (266, 80220), (280, 76209), (285, 74872), (294, 72580), (380, 56154), (382, 55860), (392, 54435), (399, 53480), (420, 50806), (456, 46795), (490, 43548), (532, 40110), (570, 37436), (573, 37240), (588, 36290), (665, 32088), (735, 29032), (760, 28077), (764, 27930), (798, 26740), (840, 25403), (931, 22920), (955, 22344), (980, 21774), (1064, 20055), (1140, 18718), (1146, 18620), (1176, 18145), (1330, 16044), (1337, 15960), (1470, 14516), (1528, 13965), (1596, 13370), (1862, 11460), (1910, 11172), (1960, 10887), (1995, 10696), (2280, 9359), (2292, 9310), (2660, 8022), (2674, 7980), (2793, 7640), (2865, 7448), (2940, 7258), (3192, 6685), (3629, 5880), (3724, 5730), (3820, 5586), (3990, 5348), (4011, 5320), (4584, 4655)]