19949384

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{409}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 46838400

約数和(自身を除く): 26889016

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 67, 91, 104, 134, 182, 268, 364, 409, 469, 536, 728, 818, 871, 938, 1636, 1742, 1876, 2863, 3272, 3484, 3752, 5317, 5726, 6097, 6968, 10634, 11452, 12194, 21268, 22904, 24388, 27403, 37219, 42536, 48776, 54806, 74438, 109612, 148876, 191821, 219224, 297752, 356239, 383642, 712478, 767284, 1424956, 1534568, 2493673, 2849912, 4987346, 9974692, 19949384]

約数ペア:

[(1, 19949384), (2, 9974692), (4, 4987346), (7, 2849912), (8, 2493673), (13, 1534568), (14, 1424956), (26, 767284), (28, 712478), (52, 383642), (56, 356239), (67, 297752), (91, 219224), (104, 191821), (134, 148876), (182, 109612), (268, 74438), (364, 54806), (409, 48776), (469, 42536), (536, 37219), (728, 27403), (818, 24388), (871, 22904), (938, 21268), (1636, 12194), (1742, 11452), (1876, 10634), (2863, 6968), (3272, 6097), (3484, 5726), (3752, 5317)]