221739280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{241}}^1$

素因数の和:345

約数の個数: 160

約数和(自身を含む): 622245888

約数和(自身を除く): 400506608

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 53, 56, 62, 70, 80, 106, 112, 124, 140, 155, 212, 217, 241, 248, 265, 280, 310, 371, 424, 434, 482, 496, 530, 560, 620, 742, 848, 868, 964, 1060, 1085, 1205, 1240, 1484, 1643, 1687, 1736, 1855, 1928, 2120, 2170, 2410, 2480, 2968, 3286, 3374, 3472, 3710, 3856, 4240, 4340, 4820, 5936, 6572, 6748, 7420, 7471, 8215, 8435, 8680, 9640, 11501, 12773, 13144, 13496, 14840, 14942, 16430, 16870, 17360, 19280, 23002, 25546, 26288, 26992, 29680, 29884, 32860, 33740, 37355, 46004, 51092, 52297, 57505, 59768, 63865, 65720, 67480, 74710, 89411, 92008, 102184, 104594, 115010, 119536, 127730, 131440, 134960, 149420, 178822, 184016, 204368, 209188, 230020, 255460, 261485, 298840, 357644, 395963, 418376, 447055, 460040, 510920, 522970, 597680, 715288, 791926, 836752, 894110, 920080, 1021840, 1045940, 1430576, 1583852, 1788220, 1979815, 2091880, 2771741, 3167704, 3576440, 3959630, 4183760, 5543482, 6335408, 7152880, 7919260, 11086964, 13858705, 15838520, 22173928, 27717410, 31677040, 44347856, 55434820, 110869640, 221739280]

約数ペア:

[(1, 221739280), (2, 110869640), (4, 55434820), (5, 44347856), (7, 31677040), (8, 27717410), (10, 22173928), (14, 15838520), (16, 13858705), (20, 11086964), (28, 7919260), (31, 7152880), (35, 6335408), (40, 5543482), (53, 4183760), (56, 3959630), (62, 3576440), (70, 3167704), (80, 2771741), (106, 2091880), (112, 1979815), (124, 1788220), (140, 1583852), (155, 1430576), (212, 1045940), (217, 1021840), (241, 920080), (248, 894110), (265, 836752), (280, 791926), (310, 715288), (371, 597680), (424, 522970), (434, 510920), (482, 460040), (496, 447055), (530, 418376), (560, 395963), (620, 357644), (742, 298840), (848, 261485), (868, 255460), (964, 230020), (1060, 209188), (1085, 204368), (1205, 184016), (1240, 178822), (1484, 149420), (1643, 134960), (1687, 131440), (1736, 127730), (1855, 119536), (1928, 115010), (2120, 104594), (2170, 102184), (2410, 92008), (2480, 89411), (2968, 74710), (3286, 67480), (3374, 65720), (3472, 63865), (3710, 59768), (3856, 57505), (4240, 52297), (4340, 51092), (4820, 46004), (5936, 37355), (6572, 33740), (6748, 32860), (7420, 29884), (7471, 29680), (8215, 26992), (8435, 26288), (8680, 25546), (9640, 23002), (11501, 19280), (12773, 17360), (13144, 16870), (13496, 16430), (14840, 14942)]