217971390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79843}}^1$

素因数の和:79873

約数の個数: 64

約数和(自身を含む): 643862016

約数和(自身を除く): 425890626

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 79843, 159686, 239529, 399215, 479058, 558901, 798430, 1037959, 1117802, 1197645, 1676703, 2075918, 2395290, 2794505, 3113877, 3353406, 5189795, 5589010, 6227754, 7265713, 8383515, 10379590, 14531426, 15569385, 16767030, 21797139, 31138770, 36328565, 43594278, 72657130, 108985695, 217971390]

約数ペア:

[(1, 217971390), (2, 108985695), (3, 72657130), (5, 43594278), (6, 36328565), (7, 31138770), (10, 21797139), (13, 16767030), (14, 15569385), (15, 14531426), (21, 10379590), (26, 8383515), (30, 7265713), (35, 6227754), (39, 5589010), (42, 5189795), (65, 3353406), (70, 3113877), (78, 2794505), (91, 2395290), (105, 2075918), (130, 1676703), (182, 1197645), (195, 1117802), (210, 1037959), (273, 798430), (390, 558901), (455, 479058), (546, 399215), (910, 239529), (1365, 159686), (2730, 79843)]