21269820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 192

約数和(自身を含む): 72930816

約数和(自身を除く): 51660996

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 37, 39, 44, 52, 55, 60, 65, 66, 67, 74, 78, 110, 111, 130, 132, 134, 143, 148, 156, 165, 185, 195, 201, 220, 222, 260, 268, 286, 330, 335, 370, 390, 402, 407, 429, 444, 481, 555, 572, 660, 670, 715, 737, 740, 780, 804, 814, 858, 871, 962, 1005, 1110, 1221, 1340, 1430, 1443, 1474, 1628, 1716, 1742, 1924, 2010, 2035, 2145, 2211, 2220, 2405, 2442, 2479, 2613, 2860, 2886, 2948, 3484, 3685, 4020, 4070, 4290, 4355, 4422, 4810, 4884, 4958, 5226, 5291, 5772, 6105, 7215, 7370, 7437, 8140, 8580, 8710, 8844, 9581, 9620, 9916, 10452, 10582, 11055, 12210, 12395, 13065, 14430, 14740, 14874, 15873, 17420, 19162, 21164, 22110, 24420, 24790, 26130, 26455, 27269, 28743, 28860, 29748, 31746, 32227, 37185, 38324, 44220, 47905, 49580, 52260, 52910, 54538, 57486, 63492, 64454, 74370, 79365, 81807, 95810, 96681, 105820, 109076, 114972, 128908, 136345, 143715, 148740, 158730, 161135, 163614, 191620, 193362, 272690, 287430, 317460, 322270, 327228, 354497, 386724, 409035, 483405, 545380, 574860, 644540, 708994, 818070, 966810, 1063491, 1417988, 1636140, 1772485, 1933620, 2126982, 3544970, 4253964, 5317455, 7089940, 10634910, 21269820]

約数ペア:

[(1, 21269820), (2, 10634910), (3, 7089940), (4, 5317455), (5, 4253964), (6, 3544970), (10, 2126982), (11, 1933620), (12, 1772485), (13, 1636140), (15, 1417988), (20, 1063491), (22, 966810), (26, 818070), (30, 708994), (33, 644540), (37, 574860), (39, 545380), (44, 483405), (52, 409035), (55, 386724), (60, 354497), (65, 327228), (66, 322270), (67, 317460), (74, 287430), (78, 272690), (110, 193362), (111, 191620), (130, 163614), (132, 161135), (134, 158730), (143, 148740), (148, 143715), (156, 136345), (165, 128908), (185, 114972), (195, 109076), (201, 105820), (220, 96681), (222, 95810), (260, 81807), (268, 79365), (286, 74370), (330, 64454), (335, 63492), (370, 57486), (390, 54538), (402, 52910), (407, 52260), (429, 49580), (444, 47905), (481, 44220), (555, 38324), (572, 37185), (660, 32227), (670, 31746), (715, 29748), (737, 28860), (740, 28743), (780, 27269), (804, 26455), (814, 26130), (858, 24790), (871, 24420), (962, 22110), (1005, 21164), (1110, 19162), (1221, 17420), (1340, 15873), (1430, 14874), (1443, 14740), (1474, 14430), (1628, 13065), (1716, 12395), (1742, 12210), (1924, 11055), (2010, 10582), (2035, 10452), (2145, 9916), (2211, 9620), (2220, 9581), (2405, 8844), (2442, 8710), (2479, 8580), (2613, 8140), (2860, 7437), (2886, 7370), (2948, 7215), (3484, 6105), (3685, 5772), (4020, 5291), (4070, 5226), (4290, 4958), (4355, 4884), (4422, 4810)]