28708120

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:273

約数の個数: 96

約数和(自身を含む): 76416480

約数和(自身を除く): 47708360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 97, 98, 140, 151, 194, 196, 245, 280, 302, 388, 392, 485, 490, 604, 679, 755, 776, 970, 980, 1057, 1208, 1358, 1510, 1940, 1960, 2114, 2716, 3020, 3395, 3880, 4228, 4753, 5285, 5432, 6040, 6790, 7399, 8456, 9506, 10570, 13580, 14647, 14798, 19012, 21140, 23765, 27160, 29294, 29596, 36995, 38024, 42280, 47530, 58588, 59192, 73235, 73990, 95060, 102529, 117176, 146470, 147980, 190120, 205058, 292940, 295960, 410116, 512645, 585880, 717703, 820232, 1025290, 1435406, 2050580, 2870812, 3588515, 4101160, 5741624, 7177030, 14354060, 28708120]

約数ペア:

[(1, 28708120), (2, 14354060), (4, 7177030), (5, 5741624), (7, 4101160), (8, 3588515), (10, 2870812), (14, 2050580), (20, 1435406), (28, 1025290), (35, 820232), (40, 717703), (49, 585880), (56, 512645), (70, 410116), (97, 295960), (98, 292940), (140, 205058), (151, 190120), (194, 147980), (196, 146470), (245, 117176), (280, 102529), (302, 95060), (388, 73990), (392, 73235), (485, 59192), (490, 58588), (604, 47530), (679, 42280), (755, 38024), (776, 36995), (970, 29596), (980, 29294), (1057, 27160), (1208, 23765), (1358, 21140), (1510, 19012), (1940, 14798), (1960, 14647), (2114, 13580), (2716, 10570), (3020, 9506), (3395, 8456), (3880, 7399), (4228, 6790), (4753, 6040), (5285, 5432)]