21223440

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4211}}^1$

素因数の和:4237

約数の個数: 120

約数和(自身を含む): 81476928

約数和(自身を除く): 60253488

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, 4211, 5040, 8422, 12633, 16844, 21055, 25266, 29477, 33688, 37899, 42110, 50532, 58954, 63165, 67376, 75798, 84220, 88431, 101064, 117908, 126330, 147385, 151596, 168440, 176862, 189495, 202128, 235816, 252660, 265293, 294770, 303192, 336880, 353724, 378990, 442155, 471632, 505320, 530586, 589540, 606384, 707448, 757980, 884310, 1010640, 1061172, 1179080, 1326465, 1414896, 1515960, 1768620, 2122344, 2358160, 2652930, 3031920, 3537240, 4244688, 5305860, 7074480, 10611720, 21223440]

約数ペア:

[(1, 21223440), (2, 10611720), (3, 7074480), (4, 5305860), (5, 4244688), (6, 3537240), (7, 3031920), (8, 2652930), (9, 2358160), (10, 2122344), (12, 1768620), (14, 1515960), (15, 1414896), (16, 1326465), (18, 1179080), (20, 1061172), (21, 1010640), (24, 884310), (28, 757980), (30, 707448), (35, 606384), (36, 589540), (40, 530586), (42, 505320), (45, 471632), (48, 442155), (56, 378990), (60, 353724), (63, 336880), (70, 303192), (72, 294770), (80, 265293), (84, 252660), (90, 235816), (105, 202128), (112, 189495), (120, 176862), (126, 168440), (140, 151596), (144, 147385), (168, 126330), (180, 117908), (210, 101064), (240, 88431), (252, 84220), (280, 75798), (315, 67376), (336, 63165), (360, 58954), (420, 50532), (504, 42110), (560, 37899), (630, 33688), (720, 29477), (840, 25266), (1008, 21055), (1260, 16844), (1680, 12633), (2520, 8422), (4211, 5040)]