20878312

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1$

素因数の和:291

約数の個数: 96

約数和(自身を含む): 52141320

約数和(自身を除く): 31263008

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 26, 28, 34, 49, 52, 56, 68, 91, 98, 104, 119, 136, 182, 196, 221, 238, 241, 364, 392, 442, 476, 482, 637, 728, 833, 884, 952, 964, 1274, 1547, 1666, 1687, 1768, 1928, 2548, 3094, 3133, 3332, 3374, 4097, 5096, 6188, 6266, 6664, 6748, 8194, 10829, 11809, 12376, 12532, 13496, 16388, 21658, 21931, 23618, 25064, 28679, 32776, 43316, 43862, 47236, 53261, 57358, 86632, 87724, 94472, 106522, 114716, 153517, 175448, 200753, 213044, 229432, 307034, 372827, 401506, 426088, 614068, 745654, 803012, 1228136, 1491308, 1606024, 2609789, 2982616, 5219578, 10439156, 20878312]

約数ペア:

[(1, 20878312), (2, 10439156), (4, 5219578), (7, 2982616), (8, 2609789), (13, 1606024), (14, 1491308), (17, 1228136), (26, 803012), (28, 745654), (34, 614068), (49, 426088), (52, 401506), (56, 372827), (68, 307034), (91, 229432), (98, 213044), (104, 200753), (119, 175448), (136, 153517), (182, 114716), (196, 106522), (221, 94472), (238, 87724), (241, 86632), (364, 57358), (392, 53261), (442, 47236), (476, 43862), (482, 43316), (637, 32776), (728, 28679), (833, 25064), (884, 23618), (952, 21931), (964, 21658), (1274, 16388), (1547, 13496), (1666, 12532), (1687, 12376), (1768, 11809), (1928, 10829), (2548, 8194), (3094, 6748), (3133, 6664), (3332, 6266), (3374, 6188), (4097, 5096)]