20859720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1307}}^1$

素因数の和:1347

約数の個数: 128

約数和(自身を含む): 75340800

約数和(自身を除く): 54481080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1307, 1330, 1596, 1995, 2280, 2614, 2660, 3192, 3921, 3990, 5228, 5320, 6535, 7842, 7980, 9149, 10456, 13070, 15684, 15960, 18298, 19605, 24833, 26140, 27447, 31368, 36596, 39210, 45745, 49666, 52280, 54894, 73192, 74499, 78420, 91490, 99332, 109788, 124165, 137235, 148998, 156840, 173831, 182980, 198664, 219576, 248330, 274470, 297996, 347662, 365960, 372495, 496660, 521493, 548940, 595992, 695324, 744990, 869155, 993320, 1042986, 1097880, 1390648, 1489980, 1738310, 2085972, 2607465, 2979960, 3476620, 4171944, 5214930, 6953240, 10429860, 20859720]

約数ペア:

[(1, 20859720), (2, 10429860), (3, 6953240), (4, 5214930), (5, 4171944), (6, 3476620), (7, 2979960), (8, 2607465), (10, 2085972), (12, 1738310), (14, 1489980), (15, 1390648), (19, 1097880), (20, 1042986), (21, 993320), (24, 869155), (28, 744990), (30, 695324), (35, 595992), (38, 548940), (40, 521493), (42, 496660), (56, 372495), (57, 365960), (60, 347662), (70, 297996), (76, 274470), (84, 248330), (95, 219576), (105, 198664), (114, 182980), (120, 173831), (133, 156840), (140, 148998), (152, 137235), (168, 124165), (190, 109788), (210, 99332), (228, 91490), (266, 78420), (280, 74499), (285, 73192), (380, 54894), (399, 52280), (420, 49666), (456, 45745), (532, 39210), (570, 36596), (665, 31368), (760, 27447), (798, 26140), (840, 24833), (1064, 19605), (1140, 18298), (1307, 15960), (1330, 15684), (1596, 13070), (1995, 10456), (2280, 9149), (2614, 7980), (2660, 7842), (3192, 6535), (3921, 5320), (3990, 5228)]