20747808

素因数分解:

$2^5\times 3^2\times {\mathrm{61}}^1\times {\mathrm{1181}}^1$

素因数の和:1258

約数の個数: 72

約数和(自身を含む): 60019596

約数和(自身を除く): 39271788

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 61, 72, 96, 122, 144, 183, 244, 288, 366, 488, 549, 732, 976, 1098, 1181, 1464, 1952, 2196, 2362, 2928, 3543, 4392, 4724, 5856, 7086, 8784, 9448, 10629, 14172, 17568, 18896, 21258, 28344, 37792, 42516, 56688, 72041, 85032, 113376, 144082, 170064, 216123, 288164, 340128, 432246, 576328, 648369, 864492, 1152656, 1296738, 1728984, 2305312, 2593476, 3457968, 5186952, 6915936, 10373904, 20747808]

約数ペア:

[(1, 20747808), (2, 10373904), (3, 6915936), (4, 5186952), (6, 3457968), (8, 2593476), (9, 2305312), (12, 1728984), (16, 1296738), (18, 1152656), (24, 864492), (32, 648369), (36, 576328), (48, 432246), (61, 340128), (72, 288164), (96, 216123), (122, 170064), (144, 144082), (183, 113376), (244, 85032), (288, 72041), (366, 56688), (488, 42516), (549, 37792), (732, 28344), (976, 21258), (1098, 18896), (1181, 17568), (1464, 14172), (1952, 10629), (2196, 9448), (2362, 8784), (2928, 7086), (3543, 5856), (4392, 4724)]