28422020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 70108416

約数和(自身を除く): 41686396

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 41, 44, 46, 55, 82, 92, 110, 115, 137, 164, 205, 220, 230, 253, 274, 410, 451, 460, 506, 548, 685, 820, 902, 943, 1012, 1265, 1370, 1507, 1804, 1886, 2255, 2530, 2740, 3014, 3151, 3772, 4510, 4715, 5060, 5617, 6028, 6302, 7535, 9020, 9430, 10373, 11234, 12604, 15070, 15755, 18860, 20746, 22468, 28085, 30140, 31510, 34661, 41492, 51865, 56170, 61787, 63020, 69322, 103730, 112340, 123574, 129191, 138644, 173305, 207460, 247148, 258382, 308935, 346610, 516764, 617870, 645955, 693220, 1235740, 1291910, 1421101, 2583820, 2842202, 5684404, 7105505, 14211010, 28422020]

約数ペア:

[(1, 28422020), (2, 14211010), (4, 7105505), (5, 5684404), (10, 2842202), (11, 2583820), (20, 1421101), (22, 1291910), (23, 1235740), (41, 693220), (44, 645955), (46, 617870), (55, 516764), (82, 346610), (92, 308935), (110, 258382), (115, 247148), (137, 207460), (164, 173305), (205, 138644), (220, 129191), (230, 123574), (253, 112340), (274, 103730), (410, 69322), (451, 63020), (460, 61787), (506, 56170), (548, 51865), (685, 41492), (820, 34661), (902, 31510), (943, 30140), (1012, 28085), (1265, 22468), (1370, 20746), (1507, 18860), (1804, 15755), (1886, 15070), (2255, 12604), (2530, 11234), (2740, 10373), (3014, 9430), (3151, 9020), (3772, 7535), (4510, 6302), (4715, 6028), (5060, 5617)]