210920920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:365

約数の個数: 128

約数和(自身を含む): 564071040

約数和(自身を除く): 353150120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 61, 70, 106, 122, 140, 212, 233, 244, 265, 280, 305, 371, 424, 427, 466, 488, 530, 610, 742, 854, 932, 1060, 1165, 1220, 1484, 1631, 1708, 1855, 1864, 2120, 2135, 2330, 2440, 2968, 3233, 3262, 3416, 3710, 4270, 4660, 6466, 6524, 7420, 8155, 8540, 9320, 12349, 12932, 13048, 14213, 14840, 16165, 16310, 17080, 22631, 24698, 25864, 28426, 32330, 32620, 45262, 49396, 56852, 61745, 64660, 65240, 71065, 86443, 90524, 98792, 99491, 113155, 113704, 123490, 129320, 142130, 172886, 181048, 198982, 226310, 246980, 284260, 345772, 397964, 432215, 452620, 493960, 497455, 568520, 691544, 753289, 795928, 864430, 905240, 994910, 1506578, 1728860, 1989820, 3013156, 3457720, 3766445, 3979640, 5273023, 6026312, 7532890, 10546046, 15065780, 21092092, 26365115, 30131560, 42184184, 52730230, 105460460, 210920920]

約数ペア:

[(1, 210920920), (2, 105460460), (4, 52730230), (5, 42184184), (7, 30131560), (8, 26365115), (10, 21092092), (14, 15065780), (20, 10546046), (28, 7532890), (35, 6026312), (40, 5273023), (53, 3979640), (56, 3766445), (61, 3457720), (70, 3013156), (106, 1989820), (122, 1728860), (140, 1506578), (212, 994910), (233, 905240), (244, 864430), (265, 795928), (280, 753289), (305, 691544), (371, 568520), (424, 497455), (427, 493960), (466, 452620), (488, 432215), (530, 397964), (610, 345772), (742, 284260), (854, 246980), (932, 226310), (1060, 198982), (1165, 181048), (1220, 172886), (1484, 142130), (1631, 129320), (1708, 123490), (1855, 113704), (1864, 113155), (2120, 99491), (2135, 98792), (2330, 90524), (2440, 86443), (2968, 71065), (3233, 65240), (3262, 64660), (3416, 61745), (3710, 56852), (4270, 49396), (4660, 45262), (6466, 32620), (6524, 32330), (7420, 28426), (8155, 25864), (8540, 24698), (9320, 22631), (12349, 17080), (12932, 16310), (13048, 16165), (14213, 14840)]