21173372

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 45061632

約数和(自身を除く): 23888260

約数列:

[1, 2, 4, 11, 19, 22, 31, 38, 43, 44, 62, 76, 86, 124, 172, 209, 341, 361, 418, 473, 589, 682, 722, 817, 836, 946, 1178, 1333, 1364, 1444, 1634, 1892, 2356, 2666, 3268, 3971, 5332, 6479, 7942, 8987, 11191, 12958, 14663, 15523, 15884, 17974, 22382, 25327, 25916, 29326, 31046, 35948, 44764, 50654, 58652, 62092, 101308, 123101, 170753, 246202, 278597, 341506, 481213, 492404, 557194, 683012, 962426, 1114388, 1924852, 5293343, 10586686, 21173372]

約数ペア:

[(1, 21173372), (2, 10586686), (4, 5293343), (11, 1924852), (19, 1114388), (22, 962426), (31, 683012), (38, 557194), (43, 492404), (44, 481213), (62, 341506), (76, 278597), (86, 246202), (124, 170753), (172, 123101), (209, 101308), (341, 62092), (361, 58652), (418, 50654), (473, 44764), (589, 35948), (682, 31046), (722, 29326), (817, 25916), (836, 25327), (946, 22382), (1178, 17974), (1333, 15884), (1364, 15523), (1444, 14663), (1634, 12958), (1892, 11191), (2356, 8987), (2666, 7942), (3268, 6479), (3971, 5332)]