21457100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:208

約数の個数: 108

約数和(自身を含む): 56402640

約数和(自身を除く): 34945540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 49, 50, 58, 70, 98, 100, 116, 140, 145, 151, 175, 196, 203, 245, 290, 302, 350, 406, 490, 580, 604, 700, 725, 755, 812, 980, 1015, 1057, 1225, 1421, 1450, 1510, 2030, 2114, 2450, 2842, 2900, 3020, 3775, 4060, 4228, 4379, 4900, 5075, 5285, 5684, 7105, 7399, 7550, 8758, 10150, 10570, 14210, 14798, 15100, 17516, 20300, 21140, 21895, 26425, 28420, 29596, 30653, 35525, 36995, 43790, 52850, 61306, 71050, 73990, 87580, 105700, 109475, 122612, 142100, 147980, 153265, 184975, 214571, 218950, 306530, 369950, 429142, 437900, 613060, 739900, 766325, 858284, 1072855, 1532650, 2145710, 3065300, 4291420, 5364275, 10728550, 21457100]

約数ペア:

[(1, 21457100), (2, 10728550), (4, 5364275), (5, 4291420), (7, 3065300), (10, 2145710), (14, 1532650), (20, 1072855), (25, 858284), (28, 766325), (29, 739900), (35, 613060), (49, 437900), (50, 429142), (58, 369950), (70, 306530), (98, 218950), (100, 214571), (116, 184975), (140, 153265), (145, 147980), (151, 142100), (175, 122612), (196, 109475), (203, 105700), (245, 87580), (290, 73990), (302, 71050), (350, 61306), (406, 52850), (490, 43790), (580, 36995), (604, 35525), (700, 30653), (725, 29596), (755, 28420), (812, 26425), (980, 21895), (1015, 21140), (1057, 20300), (1225, 17516), (1421, 15100), (1450, 14798), (1510, 14210), (2030, 10570), (2114, 10150), (2450, 8758), (2842, 7550), (2900, 7399), (3020, 7105), (3775, 5684), (4060, 5285), (4228, 5075), (4379, 4900)]