161881216

素因数分解:

$2^7\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:334

約数の個数: 128

約数和(自身を含む): 400003200

約数和(自身を除く): 238121984

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 37, 38, 56, 64, 74, 76, 112, 128, 133, 148, 152, 224, 257, 259, 266, 296, 304, 448, 514, 518, 532, 592, 608, 703, 896, 1028, 1036, 1064, 1184, 1216, 1406, 1799, 2056, 2072, 2128, 2368, 2432, 2812, 3598, 4112, 4144, 4256, 4736, 4883, 4921, 5624, 7196, 8224, 8288, 8512, 9509, 9766, 9842, 11248, 14392, 16448, 16576, 17024, 19018, 19532, 19684, 22496, 28784, 32896, 33152, 34181, 38036, 39064, 39368, 44992, 57568, 66563, 68362, 76072, 78128, 78736, 89984, 115136, 133126, 136724, 152144, 156256, 157472, 180671, 230272, 266252, 273448, 304288, 312512, 314944, 361342, 532504, 546896, 608576, 625024, 629888, 722684, 1065008, 1093792, 1217152, 1264697, 1445368, 2130016, 2187584, 2529394, 2890736, 4260032, 4375168, 5058788, 5781472, 8520064, 10117576, 11562944, 20235152, 23125888, 40470304, 80940608, 161881216]

約数ペア:

[(1, 161881216), (2, 80940608), (4, 40470304), (7, 23125888), (8, 20235152), (14, 11562944), (16, 10117576), (19, 8520064), (28, 5781472), (32, 5058788), (37, 4375168), (38, 4260032), (56, 2890736), (64, 2529394), (74, 2187584), (76, 2130016), (112, 1445368), (128, 1264697), (133, 1217152), (148, 1093792), (152, 1065008), (224, 722684), (257, 629888), (259, 625024), (266, 608576), (296, 546896), (304, 532504), (448, 361342), (514, 314944), (518, 312512), (532, 304288), (592, 273448), (608, 266252), (703, 230272), (896, 180671), (1028, 157472), (1036, 156256), (1064, 152144), (1184, 136724), (1216, 133126), (1406, 115136), (1799, 89984), (2056, 78736), (2072, 78128), (2128, 76072), (2368, 68362), (2432, 66563), (2812, 57568), (3598, 44992), (4112, 39368), (4144, 39064), (4256, 38036), (4736, 34181), (4883, 33152), (4921, 32896), (5624, 28784), (7196, 22496), (8224, 19684), (8288, 19532), (8512, 19018), (9509, 17024), (9766, 16576), (9842, 16448), (11248, 14392)]