81781776

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:525

約数の個数: 120

約数和(自身を含む): 244895040

約数和(自身を除く): 163113264

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 48, 57, 71, 72, 76, 114, 142, 144, 152, 171, 213, 228, 284, 304, 342, 421, 426, 456, 568, 639, 684, 842, 852, 912, 1136, 1263, 1278, 1349, 1368, 1684, 1704, 2526, 2556, 2698, 2736, 3368, 3408, 3789, 4047, 5052, 5112, 5396, 6736, 7578, 7999, 8094, 10104, 10224, 10792, 12141, 15156, 15998, 16188, 20208, 21584, 23997, 24282, 29891, 30312, 31996, 32376, 47994, 48564, 59782, 60624, 63992, 64752, 71991, 89673, 95988, 97128, 119564, 127984, 143982, 179346, 191976, 194256, 239128, 269019, 287964, 358692, 383952, 478256, 538038, 567929, 575928, 717384, 1076076, 1135858, 1151856, 1434768, 1703787, 2152152, 2271716, 3407574, 4304304, 4543432, 5111361, 6815148, 9086864, 10222722, 13630296, 20445444, 27260592, 40890888, 81781776]

約数ペア:

[(1, 81781776), (2, 40890888), (3, 27260592), (4, 20445444), (6, 13630296), (8, 10222722), (9, 9086864), (12, 6815148), (16, 5111361), (18, 4543432), (19, 4304304), (24, 3407574), (36, 2271716), (38, 2152152), (48, 1703787), (57, 1434768), (71, 1151856), (72, 1135858), (76, 1076076), (114, 717384), (142, 575928), (144, 567929), (152, 538038), (171, 478256), (213, 383952), (228, 358692), (284, 287964), (304, 269019), (342, 239128), (421, 194256), (426, 191976), (456, 179346), (568, 143982), (639, 127984), (684, 119564), (842, 97128), (852, 95988), (912, 89673), (1136, 71991), (1263, 64752), (1278, 63992), (1349, 60624), (1368, 59782), (1684, 48564), (1704, 47994), (2526, 32376), (2556, 31996), (2698, 30312), (2736, 29891), (3368, 24282), (3408, 23997), (3789, 21584), (4047, 20208), (5052, 16188), (5112, 15998), (5396, 15156), (6736, 12141), (7578, 10792), (7999, 10224), (8094, 10104)]