21875840

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:302

約数の個数: 128

約数和(自身を含む): 63158400

約数和(自身を除く): 41282560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 128, 133, 140, 152, 160, 190, 224, 257, 266, 280, 304, 320, 380, 448, 514, 532, 560, 608, 640, 665, 760, 896, 1028, 1064, 1120, 1216, 1285, 1330, 1520, 1799, 2056, 2128, 2240, 2432, 2570, 2660, 3040, 3598, 4112, 4256, 4480, 4883, 5140, 5320, 6080, 7196, 8224, 8512, 8995, 9766, 10280, 10640, 12160, 14392, 16448, 17024, 17990, 19532, 20560, 21280, 24415, 28784, 32896, 34181, 35980, 39064, 41120, 42560, 48830, 57568, 68362, 71960, 78128, 82240, 85120, 97660, 115136, 136724, 143920, 156256, 164480, 170905, 195320, 230272, 273448, 287840, 312512, 341810, 390640, 546896, 575680, 625024, 683620, 781280, 1093792, 1151360, 1367240, 1562560, 2187584, 2734480, 3125120, 4375168, 5468960, 10937920, 21875840]

約数ペア:

[(1, 21875840), (2, 10937920), (4, 5468960), (5, 4375168), (7, 3125120), (8, 2734480), (10, 2187584), (14, 1562560), (16, 1367240), (19, 1151360), (20, 1093792), (28, 781280), (32, 683620), (35, 625024), (38, 575680), (40, 546896), (56, 390640), (64, 341810), (70, 312512), (76, 287840), (80, 273448), (95, 230272), (112, 195320), (128, 170905), (133, 164480), (140, 156256), (152, 143920), (160, 136724), (190, 115136), (224, 97660), (257, 85120), (266, 82240), (280, 78128), (304, 71960), (320, 68362), (380, 57568), (448, 48830), (514, 42560), (532, 41120), (560, 39064), (608, 35980), (640, 34181), (665, 32896), (760, 28784), (896, 24415), (1028, 21280), (1064, 20560), (1120, 19532), (1216, 17990), (1285, 17024), (1330, 16448), (1520, 14392), (1799, 12160), (2056, 10640), (2128, 10280), (2240, 9766), (2432, 8995), (2570, 8512), (2660, 8224), (3040, 7196), (3598, 6080), (4112, 5320), (4256, 5140), (4480, 4883)]