21020650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:176

約数の個数: 96

約数和(自身を含む): 49104000

約数和(自身を除く): 28083350

約数列:

[1, 2, 5, 7, 10, 14, 19, 25, 29, 35, 38, 50, 58, 70, 95, 109, 133, 145, 175, 190, 203, 218, 266, 290, 350, 406, 475, 545, 551, 665, 725, 763, 950, 1015, 1090, 1102, 1330, 1450, 1526, 2030, 2071, 2725, 2755, 3161, 3325, 3815, 3857, 4142, 5075, 5450, 5510, 6322, 6650, 7630, 7714, 10150, 10355, 13775, 14497, 15805, 19075, 19285, 20710, 22127, 27550, 28994, 31610, 38150, 38570, 44254, 51775, 60059, 72485, 79025, 96425, 103550, 110635, 120118, 144970, 158050, 192850, 221270, 300295, 362425, 420413, 553175, 600590, 724850, 840826, 1106350, 1501475, 2102065, 3002950, 4204130, 10510325, 21020650]

約数ペア:

[(1, 21020650), (2, 10510325), (5, 4204130), (7, 3002950), (10, 2102065), (14, 1501475), (19, 1106350), (25, 840826), (29, 724850), (35, 600590), (38, 553175), (50, 420413), (58, 362425), (70, 300295), (95, 221270), (109, 192850), (133, 158050), (145, 144970), (175, 120118), (190, 110635), (203, 103550), (218, 96425), (266, 79025), (290, 72485), (350, 60059), (406, 51775), (475, 44254), (545, 38570), (551, 38150), (665, 31610), (725, 28994), (763, 27550), (950, 22127), (1015, 20710), (1090, 19285), (1102, 19075), (1330, 15805), (1450, 14497), (1526, 13775), (2030, 10355), (2071, 10150), (2725, 7714), (2755, 7630), (3161, 6650), (3325, 6322), (3815, 5510), (3857, 5450), (4142, 5075)]