19904672

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 41164200

約数和(自身を除く): 21259528

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 89, 116, 178, 232, 241, 356, 464, 482, 712, 928, 964, 1424, 1928, 2581, 2848, 3856, 5162, 6989, 7712, 10324, 13978, 20648, 21449, 27956, 41296, 42898, 55912, 82592, 85796, 111824, 171592, 223648, 343184, 622021, 686368, 1244042, 2488084, 4976168, 9952336, 19904672]

約数ペア:

[(1, 19904672), (2, 9952336), (4, 4976168), (8, 2488084), (16, 1244042), (29, 686368), (32, 622021), (58, 343184), (89, 223648), (116, 171592), (178, 111824), (232, 85796), (241, 82592), (356, 55912), (464, 42898), (482, 41296), (712, 27956), (928, 21449), (964, 20648), (1424, 13978), (1928, 10324), (2581, 7712), (2848, 6989), (3856, 5162)]