19977012

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{827}}^1$

素因数の和:909

約数の個数: 72

約数和(自身を含む): 56058912

約数和(自身を除く): 36081900

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 61, 66, 99, 122, 132, 183, 198, 244, 366, 396, 549, 671, 732, 827, 1098, 1342, 1654, 2013, 2196, 2481, 2684, 3308, 4026, 4962, 6039, 7443, 8052, 9097, 9924, 12078, 14886, 18194, 24156, 27291, 29772, 36388, 50447, 54582, 81873, 100894, 109164, 151341, 163746, 201788, 302682, 327492, 454023, 554917, 605364, 908046, 1109834, 1664751, 1816092, 2219668, 3329502, 4994253, 6659004, 9988506, 19977012]

約数ペア:

[(1, 19977012), (2, 9988506), (3, 6659004), (4, 4994253), (6, 3329502), (9, 2219668), (11, 1816092), (12, 1664751), (18, 1109834), (22, 908046), (33, 605364), (36, 554917), (44, 454023), (61, 327492), (66, 302682), (99, 201788), (122, 163746), (132, 151341), (183, 109164), (198, 100894), (244, 81873), (366, 54582), (396, 50447), (549, 36388), (671, 29772), (732, 27291), (827, 24156), (1098, 18194), (1342, 14886), (1654, 12078), (2013, 9924), (2196, 9097), (2481, 8052), (2684, 7443), (3308, 6039), (4026, 4962)]