221563720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:647

約数の個数: 128

約数和(自身を含む): 611193600

約数和(自身を除く): 389629880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 89, 119, 136, 140, 170, 178, 238, 280, 340, 356, 445, 476, 523, 595, 623, 680, 712, 890, 952, 1046, 1190, 1246, 1513, 1780, 2092, 2380, 2492, 2615, 3026, 3115, 3560, 3661, 4184, 4760, 4984, 5230, 6052, 6230, 7322, 7565, 8891, 10460, 10591, 12104, 12460, 14644, 15130, 17782, 18305, 20920, 21182, 24920, 29288, 30260, 35564, 36610, 42364, 44455, 46547, 52955, 60520, 62237, 71128, 73220, 84728, 88910, 93094, 105910, 124474, 146440, 177820, 186188, 211820, 232735, 248948, 311185, 325829, 355640, 372376, 423640, 465470, 497896, 622370, 651658, 791299, 930940, 1244740, 1303316, 1582598, 1629145, 1861880, 2489480, 2606632, 3165196, 3258290, 3956495, 5539093, 6330392, 6516580, 7912990, 11078186, 13033160, 15825980, 22156372, 27695465, 31651960, 44312744, 55390930, 110781860, 221563720]

約数ペア:

[(1, 221563720), (2, 110781860), (4, 55390930), (5, 44312744), (7, 31651960), (8, 27695465), (10, 22156372), (14, 15825980), (17, 13033160), (20, 11078186), (28, 7912990), (34, 6516580), (35, 6330392), (40, 5539093), (56, 3956495), (68, 3258290), (70, 3165196), (85, 2606632), (89, 2489480), (119, 1861880), (136, 1629145), (140, 1582598), (170, 1303316), (178, 1244740), (238, 930940), (280, 791299), (340, 651658), (356, 622370), (445, 497896), (476, 465470), (523, 423640), (595, 372376), (623, 355640), (680, 325829), (712, 311185), (890, 248948), (952, 232735), (1046, 211820), (1190, 186188), (1246, 177820), (1513, 146440), (1780, 124474), (2092, 105910), (2380, 93094), (2492, 88910), (2615, 84728), (3026, 73220), (3115, 71128), (3560, 62237), (3661, 60520), (4184, 52955), (4760, 46547), (4984, 44455), (5230, 42364), (6052, 36610), (6230, 35564), (7322, 30260), (7565, 29288), (8891, 24920), (10460, 21182), (10591, 20920), (12104, 18305), (12460, 17782), (14644, 15130)]