21710920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:108

約数の個数: 192

約数和(自身を含む): 66484800

約数和(自身を除く): 44773880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 19, 20, 22, 28, 35, 38, 40, 44, 49, 53, 55, 56, 70, 76, 77, 88, 95, 98, 106, 110, 133, 140, 152, 154, 190, 196, 209, 212, 220, 245, 265, 266, 280, 308, 371, 380, 385, 392, 418, 424, 440, 490, 530, 532, 539, 583, 616, 665, 742, 760, 770, 836, 931, 980, 1007, 1045, 1060, 1064, 1078, 1166, 1330, 1463, 1484, 1540, 1672, 1855, 1862, 1960, 2014, 2090, 2120, 2156, 2332, 2597, 2660, 2695, 2915, 2926, 2968, 3080, 3710, 3724, 4028, 4081, 4180, 4312, 4655, 4664, 5035, 5194, 5320, 5390, 5830, 5852, 7049, 7315, 7420, 7448, 8056, 8162, 8360, 9310, 10070, 10241, 10388, 10780, 11077, 11660, 11704, 12985, 14098, 14630, 14840, 16324, 18620, 20140, 20405, 20482, 20776, 21560, 22154, 23320, 25970, 28196, 28567, 29260, 32648, 35245, 37240, 40280, 40810, 40964, 44308, 49343, 51205, 51940, 55385, 56392, 57134, 58520, 70490, 77539, 81620, 81928, 88616, 98686, 102410, 103880, 110770, 114268, 140980, 142835, 155078, 163240, 197372, 204820, 221540, 228536, 246715, 281960, 285670, 310156, 387695, 394744, 409640, 443080, 493430, 542773, 571340, 620312, 775390, 986860, 1085546, 1142680, 1550780, 1973720, 2171092, 2713865, 3101560, 4342184, 5427730, 10855460, 21710920]

約数ペア:

[(1, 21710920), (2, 10855460), (4, 5427730), (5, 4342184), (7, 3101560), (8, 2713865), (10, 2171092), (11, 1973720), (14, 1550780), (19, 1142680), (20, 1085546), (22, 986860), (28, 775390), (35, 620312), (38, 571340), (40, 542773), (44, 493430), (49, 443080), (53, 409640), (55, 394744), (56, 387695), (70, 310156), (76, 285670), (77, 281960), (88, 246715), (95, 228536), (98, 221540), (106, 204820), (110, 197372), (133, 163240), (140, 155078), (152, 142835), (154, 140980), (190, 114268), (196, 110770), (209, 103880), (212, 102410), (220, 98686), (245, 88616), (265, 81928), (266, 81620), (280, 77539), (308, 70490), (371, 58520), (380, 57134), (385, 56392), (392, 55385), (418, 51940), (424, 51205), (440, 49343), (490, 44308), (530, 40964), (532, 40810), (539, 40280), (583, 37240), (616, 35245), (665, 32648), (742, 29260), (760, 28567), (770, 28196), (836, 25970), (931, 23320), (980, 22154), (1007, 21560), (1045, 20776), (1060, 20482), (1064, 20405), (1078, 20140), (1166, 18620), (1330, 16324), (1463, 14840), (1484, 14630), (1540, 14098), (1672, 12985), (1855, 11704), (1862, 11660), (1960, 11077), (2014, 10780), (2090, 10388), (2120, 10241), (2156, 10070), (2332, 9310), (2597, 8360), (2660, 8162), (2695, 8056), (2915, 7448), (2926, 7420), (2968, 7315), (3080, 7049), (3710, 5852), (3724, 5830), (4028, 5390), (4081, 5320), (4180, 5194), (4312, 5035), (4655, 4664)]