638775774

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2131}}^1$

素因数の和:2223

約数の個数: 128

約数和(自身を含む): 1776552960

約数和(自身を除く): 1137777186

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 61, 63, 78, 91, 117, 122, 126, 182, 183, 189, 234, 273, 351, 366, 378, 427, 546, 549, 702, 793, 819, 854, 1098, 1281, 1586, 1638, 1647, 2131, 2379, 2457, 2562, 3294, 3843, 4262, 4758, 4914, 5551, 6393, 7137, 7686, 11102, 11529, 12786, 14274, 14917, 16653, 19179, 21411, 23058, 27703, 29834, 33306, 38358, 42822, 44751, 49959, 55406, 57537, 83109, 89502, 99918, 115074, 129991, 134253, 149877, 166218, 193921, 249327, 259982, 268506, 299754, 387842, 389973, 402759, 498654, 581763, 747981, 779946, 805518, 909937, 1163526, 1169919, 1495962, 1689883, 1745289, 1819874, 2339838, 2729811, 3379766, 3490578, 3509757, 5069649, 5235867, 5459622, 7019514, 8189433, 10139298, 10471734, 11829181, 15208947, 16378866, 23658362, 24568299, 30417894, 35487543, 45626841, 49136598, 70975086, 91253682, 106462629, 212925258, 319387887, 638775774]

約数ペア:

[(1, 638775774), (2, 319387887), (3, 212925258), (6, 106462629), (7, 91253682), (9, 70975086), (13, 49136598), (14, 45626841), (18, 35487543), (21, 30417894), (26, 24568299), (27, 23658362), (39, 16378866), (42, 15208947), (54, 11829181), (61, 10471734), (63, 10139298), (78, 8189433), (91, 7019514), (117, 5459622), (122, 5235867), (126, 5069649), (182, 3509757), (183, 3490578), (189, 3379766), (234, 2729811), (273, 2339838), (351, 1819874), (366, 1745289), (378, 1689883), (427, 1495962), (546, 1169919), (549, 1163526), (702, 909937), (793, 805518), (819, 779946), (854, 747981), (1098, 581763), (1281, 498654), (1586, 402759), (1638, 389973), (1647, 387842), (2131, 299754), (2379, 268506), (2457, 259982), (2562, 249327), (3294, 193921), (3843, 166218), (4262, 149877), (4758, 134253), (4914, 129991), (5551, 115074), (6393, 99918), (7137, 89502), (7686, 83109), (11102, 57537), (11529, 55406), (12786, 49959), (14274, 44751), (14917, 42822), (16653, 38358), (19179, 33306), (21411, 29834), (23058, 27703)]