21355040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{829}}^1$

素因数の和:874

約数の個数: 96

約数和(自身を含む): 60238080

約数和(自身を除く): 38883040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 736, 805, 829, 920, 1120, 1288, 1610, 1658, 1840, 2576, 3220, 3316, 3680, 4145, 5152, 5803, 6440, 6632, 8290, 11606, 12880, 13264, 16580, 19067, 23212, 25760, 26528, 29015, 33160, 38134, 46424, 58030, 66320, 76268, 92848, 95335, 116060, 132640, 133469, 152536, 185696, 190670, 232120, 266938, 305072, 381340, 464240, 533876, 610144, 667345, 762680, 928480, 1067752, 1334690, 1525360, 2135504, 2669380, 3050720, 4271008, 5338760, 10677520, 21355040]

約数ペア:

[(1, 21355040), (2, 10677520), (4, 5338760), (5, 4271008), (7, 3050720), (8, 2669380), (10, 2135504), (14, 1525360), (16, 1334690), (20, 1067752), (23, 928480), (28, 762680), (32, 667345), (35, 610144), (40, 533876), (46, 464240), (56, 381340), (70, 305072), (80, 266938), (92, 232120), (112, 190670), (115, 185696), (140, 152536), (160, 133469), (161, 132640), (184, 116060), (224, 95335), (230, 92848), (280, 76268), (322, 66320), (368, 58030), (460, 46424), (560, 38134), (644, 33160), (736, 29015), (805, 26528), (829, 25760), (920, 23212), (1120, 19067), (1288, 16580), (1610, 13264), (1658, 12880), (1840, 11606), (2576, 8290), (3220, 6632), (3316, 6440), (3680, 5803), (4145, 5152)]