28020900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:202

約数の個数: 144

約数和(自身を含む): 87994368

約数和(自身を除く): 59973468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 25, 30, 31, 46, 50, 60, 62, 69, 75, 92, 93, 100, 115, 124, 131, 138, 150, 155, 186, 230, 262, 276, 300, 310, 345, 372, 393, 460, 465, 524, 575, 620, 655, 690, 713, 775, 786, 930, 1150, 1310, 1380, 1426, 1550, 1572, 1725, 1860, 1965, 2139, 2300, 2325, 2620, 2852, 3013, 3100, 3275, 3450, 3565, 3930, 4061, 4278, 4650, 6026, 6550, 6900, 7130, 7860, 8122, 8556, 9039, 9300, 9825, 10695, 12052, 12183, 13100, 14260, 15065, 16244, 17825, 18078, 19650, 20305, 21390, 24366, 30130, 35650, 36156, 39300, 40610, 42780, 45195, 48732, 53475, 60260, 60915, 71300, 75325, 81220, 90390, 93403, 101525, 106950, 121830, 150650, 180780, 186806, 203050, 213900, 225975, 243660, 280209, 301300, 304575, 373612, 406100, 451950, 467015, 560418, 609150, 903900, 934030, 1120836, 1218300, 1401045, 1868060, 2335075, 2802090, 4670150, 5604180, 7005225, 9340300, 14010450, 28020900]

約数ペア:

[(1, 28020900), (2, 14010450), (3, 9340300), (4, 7005225), (5, 5604180), (6, 4670150), (10, 2802090), (12, 2335075), (15, 1868060), (20, 1401045), (23, 1218300), (25, 1120836), (30, 934030), (31, 903900), (46, 609150), (50, 560418), (60, 467015), (62, 451950), (69, 406100), (75, 373612), (92, 304575), (93, 301300), (100, 280209), (115, 243660), (124, 225975), (131, 213900), (138, 203050), (150, 186806), (155, 180780), (186, 150650), (230, 121830), (262, 106950), (276, 101525), (300, 93403), (310, 90390), (345, 81220), (372, 75325), (393, 71300), (460, 60915), (465, 60260), (524, 53475), (575, 48732), (620, 45195), (655, 42780), (690, 40610), (713, 39300), (775, 36156), (786, 35650), (930, 30130), (1150, 24366), (1310, 21390), (1380, 20305), (1426, 19650), (1550, 18078), (1572, 17825), (1725, 16244), (1860, 15065), (1965, 14260), (2139, 13100), (2300, 12183), (2325, 12052), (2620, 10695), (2852, 9825), (3013, 9300), (3100, 9039), (3275, 8556), (3450, 8122), (3565, 7860), (3930, 7130), (4061, 6900), (4278, 6550), (4650, 6026)]