20816068

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 46484928

約数和(自身を除く): 25668860

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 53, 83, 91, 106, 166, 169, 182, 212, 332, 338, 364, 371, 581, 676, 689, 742, 1079, 1162, 1183, 1378, 1484, 2158, 2324, 2366, 2756, 4316, 4399, 4732, 4823, 7553, 8798, 8957, 9646, 14027, 15106, 17596, 17914, 19292, 28054, 30212, 30793, 35828, 56108, 57187, 61586, 62699, 98189, 114374, 123172, 125398, 196378, 228748, 250796, 392756, 400309, 743431, 800618, 1486862, 1601236, 2973724, 5204017, 10408034, 20816068]

約数ペア:

[(1, 20816068), (2, 10408034), (4, 5204017), (7, 2973724), (13, 1601236), (14, 1486862), (26, 800618), (28, 743431), (52, 400309), (53, 392756), (83, 250796), (91, 228748), (106, 196378), (166, 125398), (169, 123172), (182, 114374), (212, 98189), (332, 62699), (338, 61586), (364, 57187), (371, 56108), (581, 35828), (676, 30793), (689, 30212), (742, 28054), (1079, 19292), (1162, 17914), (1183, 17596), (1378, 15106), (1484, 14027), (2158, 9646), (2324, 8957), (2366, 8798), (2756, 7553), (4316, 4823), (4399, 4732)]