18689920

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 128

約数和(自身を含む): 49572000

約数和(自身を除く): 30882080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 32, 38, 40, 53, 58, 64, 76, 80, 95, 106, 116, 128, 145, 152, 160, 190, 212, 232, 265, 290, 304, 320, 380, 424, 464, 530, 551, 580, 608, 640, 760, 848, 928, 1007, 1060, 1102, 1160, 1216, 1520, 1537, 1696, 1856, 2014, 2120, 2204, 2320, 2432, 2755, 3040, 3074, 3392, 3712, 4028, 4240, 4408, 4640, 5035, 5510, 6080, 6148, 6784, 7685, 8056, 8480, 8816, 9280, 10070, 11020, 12160, 12296, 15370, 16112, 16960, 17632, 18560, 20140, 22040, 24592, 29203, 30740, 32224, 33920, 35264, 40280, 44080, 49184, 58406, 61480, 64448, 70528, 80560, 88160, 98368, 116812, 122960, 128896, 146015, 161120, 176320, 196736, 233624, 245920, 292030, 322240, 352640, 467248, 491840, 584060, 644480, 934496, 983680, 1168120, 1868992, 2336240, 3737984, 4672480, 9344960, 18689920]

約数ペア:

[(1, 18689920), (2, 9344960), (4, 4672480), (5, 3737984), (8, 2336240), (10, 1868992), (16, 1168120), (19, 983680), (20, 934496), (29, 644480), (32, 584060), (38, 491840), (40, 467248), (53, 352640), (58, 322240), (64, 292030), (76, 245920), (80, 233624), (95, 196736), (106, 176320), (116, 161120), (128, 146015), (145, 128896), (152, 122960), (160, 116812), (190, 98368), (212, 88160), (232, 80560), (265, 70528), (290, 64448), (304, 61480), (320, 58406), (380, 49184), (424, 44080), (464, 40280), (530, 35264), (551, 33920), (580, 32224), (608, 30740), (640, 29203), (760, 24592), (848, 22040), (928, 20140), (1007, 18560), (1060, 17632), (1102, 16960), (1160, 16112), (1216, 15370), (1520, 12296), (1537, 12160), (1696, 11020), (1856, 10070), (2014, 9280), (2120, 8816), (2204, 8480), (2320, 8056), (2432, 7685), (2755, 6784), (3040, 6148), (3074, 6080), (3392, 5510), (3712, 5035), (4028, 4640), (4240, 4408)]