19691280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3907}}^1$

素因数の和:3933

約数の個数: 120

約数和(自身を含む): 75596352

約数和(自身を除く): 55905072

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, 3907, 5040, 7814, 11721, 15628, 19535, 23442, 27349, 31256, 35163, 39070, 46884, 54698, 58605, 62512, 70326, 78140, 82047, 93768, 109396, 117210, 136745, 140652, 156280, 164094, 175815, 187536, 218792, 234420, 246141, 273490, 281304, 312560, 328188, 351630, 410235, 437584, 468840, 492282, 546980, 562608, 656376, 703260, 820470, 937680, 984564, 1093960, 1230705, 1312752, 1406520, 1640940, 1969128, 2187920, 2461410, 2813040, 3281880, 3938256, 4922820, 6563760, 9845640, 19691280]

約数ペア:

[(1, 19691280), (2, 9845640), (3, 6563760), (4, 4922820), (5, 3938256), (6, 3281880), (7, 2813040), (8, 2461410), (9, 2187920), (10, 1969128), (12, 1640940), (14, 1406520), (15, 1312752), (16, 1230705), (18, 1093960), (20, 984564), (21, 937680), (24, 820470), (28, 703260), (30, 656376), (35, 562608), (36, 546980), (40, 492282), (42, 468840), (45, 437584), (48, 410235), (56, 351630), (60, 328188), (63, 312560), (70, 281304), (72, 273490), (80, 246141), (84, 234420), (90, 218792), (105, 187536), (112, 175815), (120, 164094), (126, 156280), (140, 140652), (144, 136745), (168, 117210), (180, 109396), (210, 93768), (240, 82047), (252, 78140), (280, 70326), (315, 62512), (336, 58605), (360, 54698), (420, 46884), (504, 39070), (560, 35163), (630, 31256), (720, 27349), (840, 23442), (1008, 19535), (1260, 15628), (1680, 11721), (2520, 7814), (3907, 5040)]