20533149

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 38330880

約数和(自身を除く): 17797731

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 61, 63, 91, 117, 137, 183, 189, 273, 351, 411, 427, 549, 793, 819, 959, 1233, 1281, 1647, 1781, 2379, 2457, 2877, 3699, 3843, 5343, 5551, 7137, 8357, 8631, 11529, 12467, 16029, 16653, 21411, 25071, 25893, 37401, 48087, 49959, 58499, 75213, 108641, 112203, 149877, 175497, 225639, 325923, 336609, 526491, 760487, 977769, 1579473, 2281461, 2933307, 6844383, 20533149]

約数ペア:

[(1, 20533149), (3, 6844383), (7, 2933307), (9, 2281461), (13, 1579473), (21, 977769), (27, 760487), (39, 526491), (61, 336609), (63, 325923), (91, 225639), (117, 175497), (137, 149877), (183, 112203), (189, 108641), (273, 75213), (351, 58499), (411, 49959), (427, 48087), (549, 37401), (793, 25893), (819, 25071), (959, 21411), (1233, 16653), (1281, 16029), (1647, 12467), (1781, 11529), (2379, 8631), (2457, 8357), (2877, 7137), (3699, 5551), (3843, 5343)]