1995365990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1\times {\mathrm{419}}^1$

素因数の和:809

約数の個数: 64

約数和(自身を含む): 3861950400

約数和(自身を除く): 1866584410

約数列:

[1, 2, 5, 10, 17, 34, 85, 109, 170, 218, 257, 419, 514, 545, 838, 1090, 1285, 1853, 2095, 2570, 3706, 4190, 4369, 7123, 8738, 9265, 14246, 18530, 21845, 28013, 35615, 43690, 45671, 56026, 71230, 91342, 107683, 140065, 215366, 228355, 280130, 456710, 476221, 538415, 776407, 952442, 1076830, 1552814, 1830611, 2381105, 3661222, 3882035, 4762210, 7764070, 9153055, 11737447, 18306110, 23474894, 58687235, 117374470, 199536599, 399073198, 997682995, 1995365990]

約数ペア:

[(1, 1995365990), (2, 997682995), (5, 399073198), (10, 199536599), (17, 117374470), (34, 58687235), (85, 23474894), (109, 18306110), (170, 11737447), (218, 9153055), (257, 7764070), (419, 4762210), (514, 3882035), (545, 3661222), (838, 2381105), (1090, 1830611), (1285, 1552814), (1853, 1076830), (2095, 952442), (2570, 776407), (3706, 538415), (4190, 476221), (4369, 456710), (7123, 280130), (8738, 228355), (9265, 215366), (14246, 140065), (18530, 107683), (21845, 91342), (28013, 71230), (35615, 56026), (43690, 45671)]