21887460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{599}}^1$

素因数の和:650

約数の個数: 144

約数和(自身を含む): 78624000

約数和(自身を除く): 56736540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 58, 60, 63, 70, 84, 87, 90, 105, 116, 126, 140, 145, 174, 180, 203, 210, 252, 261, 290, 315, 348, 406, 420, 435, 522, 580, 599, 609, 630, 812, 870, 1015, 1044, 1198, 1218, 1260, 1305, 1740, 1797, 1827, 2030, 2396, 2436, 2610, 2995, 3045, 3594, 3654, 4060, 4193, 5220, 5391, 5990, 6090, 7188, 7308, 8386, 8985, 9135, 10782, 11980, 12180, 12579, 16772, 17371, 17970, 18270, 20965, 21564, 25158, 26955, 34742, 35940, 36540, 37737, 41930, 50316, 52113, 53910, 62895, 69484, 75474, 83860, 86855, 104226, 107820, 121597, 125790, 150948, 156339, 173710, 188685, 208452, 243194, 251580, 260565, 312678, 347420, 364791, 377370, 486388, 521130, 607985, 625356, 729582, 754740, 781695, 1042260, 1094373, 1215970, 1459164, 1563390, 1823955, 2188746, 2431940, 3126780, 3647910, 4377492, 5471865, 7295820, 10943730, 21887460]

約数ペア:

[(1, 21887460), (2, 10943730), (3, 7295820), (4, 5471865), (5, 4377492), (6, 3647910), (7, 3126780), (9, 2431940), (10, 2188746), (12, 1823955), (14, 1563390), (15, 1459164), (18, 1215970), (20, 1094373), (21, 1042260), (28, 781695), (29, 754740), (30, 729582), (35, 625356), (36, 607985), (42, 521130), (45, 486388), (58, 377370), (60, 364791), (63, 347420), (70, 312678), (84, 260565), (87, 251580), (90, 243194), (105, 208452), (116, 188685), (126, 173710), (140, 156339), (145, 150948), (174, 125790), (180, 121597), (203, 107820), (210, 104226), (252, 86855), (261, 83860), (290, 75474), (315, 69484), (348, 62895), (406, 53910), (420, 52113), (435, 50316), (522, 41930), (580, 37737), (599, 36540), (609, 35940), (630, 34742), (812, 26955), (870, 25158), (1015, 21564), (1044, 20965), (1198, 18270), (1218, 17970), (1260, 17371), (1305, 16772), (1740, 12579), (1797, 12180), (1827, 11980), (2030, 10782), (2396, 9135), (2436, 8985), (2610, 8386), (2995, 7308), (3045, 7188), (3594, 6090), (3654, 5990), (4060, 5391), (4193, 5220)]