19892880

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3947}}^1$

素因数の和:3973

約数の個数: 120

約数和(自身を含む): 76370112

約数和(自身を除く): 56477232

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 3947, 5040, 7894, 11841, 15788, 19735, 23682, 27629, 31576, 35523, 39470, 47364, 55258, 59205, 63152, 71046, 78940, 82887, 94728, 110516, 118410, 138145, 142092, 157880, 165774, 177615, 189456, 221032, 236820, 248661, 276290, 284184, 315760, 331548, 355230, 414435, 442064, 473640, 497322, 552580, 568368, 663096, 710460, 828870, 947280, 994644, 1105160, 1243305, 1326192, 1420920, 1657740, 1989288, 2210320, 2486610, 2841840, 3315480, 3978576, 4973220, 6630960, 9946440, 19892880]

約数ペア:

[(1, 19892880), (2, 9946440), (3, 6630960), (4, 4973220), (5, 3978576), (6, 3315480), (7, 2841840), (8, 2486610), (9, 2210320), (10, 1989288), (12, 1657740), (14, 1420920), (15, 1326192), (16, 1243305), (18, 1105160), (20, 994644), (21, 947280), (24, 828870), (28, 710460), (30, 663096), (35, 568368), (36, 552580), (40, 497322), (42, 473640), (45, 442064), (48, 414435), (56, 355230), (60, 331548), (63, 315760), (70, 284184), (72, 276290), (80, 248661), (84, 236820), (90, 221032), (105, 189456), (112, 177615), (120, 165774), (126, 157880), (140, 142092), (144, 138145), (168, 118410), (180, 110516), (210, 94728), (240, 82887), (252, 78940), (280, 71046), (315, 63152), (336, 59205), (360, 55258), (420, 47364), (504, 39470), (560, 35523), (630, 31576), (720, 27629), (840, 23682), (1008, 19735), (1260, 15788), (1680, 11841), (2520, 7894), (3947, 5040)]