21776580

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{823}}^1$

素因数の和:855

約数の個数: 144

約数和(自身を含む): 78906240

約数和(自身を除く): 57129660

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, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 210, 245, 252, 270, 294, 315, 378, 420, 441, 490, 540, 588, 630, 735, 756, 823, 882, 945, 980, 1260, 1323, 1470, 1646, 1764, 1890, 2205, 2469, 2646, 2940, 3292, 3780, 4115, 4410, 4938, 5292, 5761, 6615, 7407, 8230, 8820, 9876, 11522, 12345, 13230, 14814, 16460, 17283, 22221, 23044, 24690, 26460, 28805, 29628, 34566, 37035, 40327, 44442, 49380, 51849, 57610, 69132, 74070, 80654, 86415, 88884, 103698, 111105, 115220, 120981, 148140, 155547, 161308, 172830, 201635, 207396, 222210, 241962, 259245, 311094, 345660, 362943, 403270, 444420, 483924, 518490, 604905, 622188, 725886, 777735, 806540, 1036980, 1088829, 1209810, 1451772, 1555470, 1814715, 2177658, 2419620, 3110940, 3629430, 4355316, 5444145, 7258860, 10888290, 21776580]

約数ペア:

[(1, 21776580), (2, 10888290), (3, 7258860), (4, 5444145), (5, 4355316), (6, 3629430), (7, 3110940), (9, 2419620), (10, 2177658), (12, 1814715), (14, 1555470), (15, 1451772), (18, 1209810), (20, 1088829), (21, 1036980), (27, 806540), (28, 777735), (30, 725886), (35, 622188), (36, 604905), (42, 518490), (45, 483924), (49, 444420), (54, 403270), (60, 362943), (63, 345660), (70, 311094), (84, 259245), (90, 241962), (98, 222210), (105, 207396), (108, 201635), (126, 172830), (135, 161308), (140, 155547), (147, 148140), (180, 120981), (189, 115220), (196, 111105), (210, 103698), (245, 88884), (252, 86415), (270, 80654), (294, 74070), (315, 69132), (378, 57610), (420, 51849), (441, 49380), (490, 44442), (540, 40327), (588, 37035), (630, 34566), (735, 29628), (756, 28805), (823, 26460), (882, 24690), (945, 23044), (980, 22221), (1260, 17283), (1323, 16460), (1470, 14814), (1646, 13230), (1764, 12345), (1890, 11522), (2205, 9876), (2469, 8820), (2646, 8230), (2940, 7407), (3292, 6615), (3780, 5761), (4115, 5292), (4410, 4938)]