639784964

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{1301}}^1$

素因数の和:1525

約数の個数: 72

約数和(自身を含む): 1410956568

約数和(自身を除く): 771171604

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 193, 196, 364, 386, 637, 772, 1274, 1301, 1351, 2509, 2548, 2602, 2702, 5018, 5204, 5404, 9107, 9457, 10036, 16913, 17563, 18214, 18914, 33826, 35126, 36428, 37828, 63749, 67652, 70252, 118391, 122941, 127498, 236782, 245882, 251093, 254996, 473564, 491764, 502186, 828737, 1004372, 1657474, 1757651, 3264209, 3314948, 3515302, 6528418, 7030604, 12303557, 13056836, 22849463, 24607114, 45698926, 49214228, 91397852, 159946241, 319892482, 639784964]

約数ペア:

[(1, 639784964), (2, 319892482), (4, 159946241), (7, 91397852), (13, 49214228), (14, 45698926), (26, 24607114), (28, 22849463), (49, 13056836), (52, 12303557), (91, 7030604), (98, 6528418), (182, 3515302), (193, 3314948), (196, 3264209), (364, 1757651), (386, 1657474), (637, 1004372), (772, 828737), (1274, 502186), (1301, 491764), (1351, 473564), (2509, 254996), (2548, 251093), (2602, 245882), (2702, 236782), (5018, 127498), (5204, 122941), (5404, 118391), (9107, 70252), (9457, 67652), (10036, 63749), (16913, 37828), (17563, 36428), (18214, 35126), (18914, 33826)]