128521700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:246

約数の個数: 144

約数和(自身を含む): 326229120

約数和(自身を除く): 197707420

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 23, 25, 34, 38, 46, 50, 68, 76, 85, 92, 95, 100, 115, 170, 173, 190, 230, 323, 340, 346, 380, 391, 425, 437, 460, 475, 575, 646, 692, 782, 850, 865, 874, 950, 1150, 1292, 1564, 1615, 1700, 1730, 1748, 1900, 1955, 2185, 2300, 2941, 3230, 3287, 3460, 3910, 3979, 4325, 4370, 5882, 6460, 6574, 7429, 7820, 7958, 8075, 8650, 8740, 9775, 10925, 11764, 13148, 14705, 14858, 15916, 16150, 16435, 17300, 19550, 19895, 21850, 29410, 29716, 32300, 32870, 37145, 39100, 39790, 43700, 55879, 58820, 65740, 67643, 73525, 74290, 75601, 79580, 82175, 99475, 111758, 135286, 147050, 148580, 151202, 164350, 185725, 198950, 223516, 270572, 279395, 294100, 302404, 328700, 338215, 371450, 378005, 397900, 558790, 676430, 742900, 756010, 1117580, 1285217, 1352860, 1396975, 1512020, 1691075, 1890025, 2570434, 2793950, 3382150, 3780050, 5140868, 5587900, 6426085, 6764300, 7560100, 12852170, 25704340, 32130425, 64260850, 128521700]

約数ペア:

[(1, 128521700), (2, 64260850), (4, 32130425), (5, 25704340), (10, 12852170), (17, 7560100), (19, 6764300), (20, 6426085), (23, 5587900), (25, 5140868), (34, 3780050), (38, 3382150), (46, 2793950), (50, 2570434), (68, 1890025), (76, 1691075), (85, 1512020), (92, 1396975), (95, 1352860), (100, 1285217), (115, 1117580), (170, 756010), (173, 742900), (190, 676430), (230, 558790), (323, 397900), (340, 378005), (346, 371450), (380, 338215), (391, 328700), (425, 302404), (437, 294100), (460, 279395), (475, 270572), (575, 223516), (646, 198950), (692, 185725), (782, 164350), (850, 151202), (865, 148580), (874, 147050), (950, 135286), (1150, 111758), (1292, 99475), (1564, 82175), (1615, 79580), (1700, 75601), (1730, 74290), (1748, 73525), (1900, 67643), (1955, 65740), (2185, 58820), (2300, 55879), (2941, 43700), (3230, 39790), (3287, 39100), (3460, 37145), (3910, 32870), (3979, 32300), (4325, 29716), (4370, 29410), (5882, 21850), (6460, 19895), (6574, 19550), (7429, 17300), (7820, 16435), (7958, 16150), (8075, 15916), (8650, 14858), (8740, 14705), (9775, 13148), (10925, 11764)]