21730530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 54120960

約数和(自身を除く): 32390430

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 79, 106, 158, 159, 173, 237, 265, 318, 346, 395, 474, 519, 530, 790, 795, 865, 1038, 1185, 1590, 1730, 2370, 2595, 4187, 5190, 8374, 9169, 12561, 13667, 18338, 20935, 25122, 27334, 27507, 41001, 41870, 45845, 55014, 62805, 68335, 82002, 91690, 125610, 136670, 137535, 205005, 275070, 410010, 724351, 1448702, 2173053, 3621755, 4346106, 7243510, 10865265, 21730530]

約数ペア:

[(1, 21730530), (2, 10865265), (3, 7243510), (5, 4346106), (6, 3621755), (10, 2173053), (15, 1448702), (30, 724351), (53, 410010), (79, 275070), (106, 205005), (158, 137535), (159, 136670), (173, 125610), (237, 91690), (265, 82002), (318, 68335), (346, 62805), (395, 55014), (474, 45845), (519, 41870), (530, 41001), (790, 27507), (795, 27334), (865, 25122), (1038, 20935), (1185, 18338), (1590, 13667), (1730, 12561), (2370, 9169), (2595, 8374), (4187, 5190)]