20404020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:170

約数の個数: 192

約数和(自身を含む): 72930816

約数和(自身を除く): 52526796

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 37, 39, 42, 52, 60, 65, 70, 74, 78, 84, 91, 101, 105, 111, 130, 140, 148, 156, 182, 185, 195, 202, 210, 222, 259, 260, 273, 303, 364, 370, 390, 404, 420, 444, 455, 481, 505, 518, 546, 555, 606, 707, 740, 777, 780, 910, 962, 1010, 1036, 1092, 1110, 1212, 1295, 1313, 1365, 1414, 1443, 1515, 1554, 1820, 1924, 2020, 2121, 2220, 2405, 2590, 2626, 2730, 2828, 2886, 3030, 3108, 3367, 3535, 3737, 3885, 3939, 4242, 4810, 5180, 5252, 5460, 5772, 6060, 6565, 6734, 7070, 7215, 7474, 7770, 7878, 8484, 9191, 9620, 10101, 10605, 11211, 13130, 13468, 14140, 14430, 14948, 15540, 15756, 16835, 18382, 18685, 19695, 20202, 21210, 22422, 26159, 26260, 27573, 28860, 33670, 36764, 37370, 39390, 40404, 42420, 44844, 45955, 48581, 50505, 52318, 55146, 56055, 67340, 74740, 78477, 78780, 91910, 97162, 101010, 104636, 110292, 112110, 130795, 137865, 145743, 156954, 183820, 194324, 202020, 224220, 242905, 261590, 275730, 291486, 313908, 340067, 392385, 485810, 523180, 551460, 582972, 680134, 728715, 784770, 971620, 1020201, 1360268, 1457430, 1569540, 1700335, 2040402, 2914860, 3400670, 4080804, 5101005, 6801340, 10202010, 20404020]

約数ペア:

[(1, 20404020), (2, 10202010), (3, 6801340), (4, 5101005), (5, 4080804), (6, 3400670), (7, 2914860), (10, 2040402), (12, 1700335), (13, 1569540), (14, 1457430), (15, 1360268), (20, 1020201), (21, 971620), (26, 784770), (28, 728715), (30, 680134), (35, 582972), (37, 551460), (39, 523180), (42, 485810), (52, 392385), (60, 340067), (65, 313908), (70, 291486), (74, 275730), (78, 261590), (84, 242905), (91, 224220), (101, 202020), (105, 194324), (111, 183820), (130, 156954), (140, 145743), (148, 137865), (156, 130795), (182, 112110), (185, 110292), (195, 104636), (202, 101010), (210, 97162), (222, 91910), (259, 78780), (260, 78477), (273, 74740), (303, 67340), (364, 56055), (370, 55146), (390, 52318), (404, 50505), (420, 48581), (444, 45955), (455, 44844), (481, 42420), (505, 40404), (518, 39390), (546, 37370), (555, 36764), (606, 33670), (707, 28860), (740, 27573), (777, 26260), (780, 26159), (910, 22422), (962, 21210), (1010, 20202), (1036, 19695), (1092, 18685), (1110, 18382), (1212, 16835), (1295, 15756), (1313, 15540), (1365, 14948), (1414, 14430), (1443, 14140), (1515, 13468), (1554, 13130), (1820, 11211), (1924, 10605), (2020, 10101), (2121, 9620), (2220, 9191), (2405, 8484), (2590, 7878), (2626, 7770), (2730, 7474), (2828, 7215), (2886, 7070), (3030, 6734), (3108, 6565), (3367, 6060), (3535, 5772), (3737, 5460), (3885, 5252), (3939, 5180), (4242, 4810)]