21353220

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{269}}^1$

素因数の和:304

約数の個数: 180

約数和(自身を含む): 78211980

約数和(自身を除く): 56858760

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 269, 270, 294, 315, 324, 378, 405, 420, 441, 490, 538, 540, 567, 588, 630, 735, 756, 807, 810, 882, 945, 980, 1076, 1134, 1260, 1323, 1345, 1470, 1614, 1620, 1764, 1883, 1890, 2205, 2268, 2421, 2646, 2690, 2835, 2940, 3228, 3766, 3780, 3969, 4035, 4410, 4842, 5292, 5380, 5649, 5670, 6615, 7263, 7532, 7938, 8070, 8820, 9415, 9684, 11298, 11340, 12105, 13181, 13230, 14526, 15876, 16140, 16947, 18830, 19845, 21789, 22596, 24210, 26362, 26460, 28245, 29052, 33894, 36315, 37660, 39543, 39690, 43578, 48420, 50841, 52724, 56490, 65905, 67788, 72630, 79086, 79380, 84735, 87156, 101682, 108945, 112980, 118629, 131810, 145260, 152523, 158172, 169470, 197715, 203364, 217890, 237258, 254205, 263620, 305046, 338940, 355887, 395430, 435780, 474516, 508410, 593145, 610092, 711774, 762615, 790860, 1016820, 1067661, 1186290, 1423548, 1525230, 1779435, 2135322, 2372580, 3050460, 3558870, 4270644, 5338305, 7117740, 10676610, 21353220]

約数ペア:

[(1, 21353220), (2, 10676610), (3, 7117740), (4, 5338305), (5, 4270644), (6, 3558870), (7, 3050460), (9, 2372580), (10, 2135322), (12, 1779435), (14, 1525230), (15, 1423548), (18, 1186290), (20, 1067661), (21, 1016820), (27, 790860), (28, 762615), (30, 711774), (35, 610092), (36, 593145), (42, 508410), (45, 474516), (49, 435780), (54, 395430), (60, 355887), (63, 338940), (70, 305046), (81, 263620), (84, 254205), (90, 237258), (98, 217890), (105, 203364), (108, 197715), (126, 169470), (135, 158172), (140, 152523), (147, 145260), (162, 131810), (180, 118629), (189, 112980), (196, 108945), (210, 101682), (245, 87156), (252, 84735), (269, 79380), (270, 79086), (294, 72630), (315, 67788), (324, 65905), (378, 56490), (405, 52724), (420, 50841), (441, 48420), (490, 43578), (538, 39690), (540, 39543), (567, 37660), (588, 36315), (630, 33894), (735, 29052), (756, 28245), (807, 26460), (810, 26362), (882, 24210), (945, 22596), (980, 21789), (1076, 19845), (1134, 18830), (1260, 16947), (1323, 16140), (1345, 15876), (1470, 14526), (1614, 13230), (1620, 13181), (1764, 12105), (1883, 11340), (1890, 11298), (2205, 9684), (2268, 9415), (2421, 8820), (2646, 8070), (2690, 7938), (2835, 7532), (2940, 7263), (3228, 6615), (3766, 5670), (3780, 5649), (3969, 5380), (4035, 5292), (4410, 4842)]