340970240

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:726

約数の個数: 144

約数和(自身を含む): 909302016

約数和(自身を除く): 568331776

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 416, 496, 520, 620, 640, 661, 806, 832, 992, 1040, 1240, 1280, 1322, 1612, 1664, 1984, 2015, 2080, 2480, 2644, 3224, 3305, 3328, 3968, 4030, 4160, 4960, 5288, 6448, 6610, 7936, 8060, 8320, 8593, 9920, 10576, 12896, 13220, 16120, 16640, 17186, 19840, 20491, 21152, 25792, 26440, 32240, 34372, 39680, 40982, 42304, 42965, 51584, 52880, 64480, 68744, 81964, 84608, 85930, 102455, 103168, 105760, 128960, 137488, 163928, 169216, 171860, 204910, 211520, 257920, 266383, 274976, 327856, 343720, 409820, 423040, 515840, 532766, 549952, 655712, 687440, 819640, 846080, 1065532, 1099904, 1311424, 1331915, 1374880, 1639280, 2131064, 2199808, 2622848, 2663830, 2749760, 3278560, 4262128, 5245696, 5327660, 5499520, 6557120, 8524256, 10655320, 10999040, 13114240, 17048512, 21310640, 26228480, 34097024, 42621280, 68194048, 85242560, 170485120, 340970240]

約数ペア:

[(1, 340970240), (2, 170485120), (4, 85242560), (5, 68194048), (8, 42621280), (10, 34097024), (13, 26228480), (16, 21310640), (20, 17048512), (26, 13114240), (31, 10999040), (32, 10655320), (40, 8524256), (52, 6557120), (62, 5499520), (64, 5327660), (65, 5245696), (80, 4262128), (104, 3278560), (124, 2749760), (128, 2663830), (130, 2622848), (155, 2199808), (160, 2131064), (208, 1639280), (248, 1374880), (256, 1331915), (260, 1311424), (310, 1099904), (320, 1065532), (403, 846080), (416, 819640), (496, 687440), (520, 655712), (620, 549952), (640, 532766), (661, 515840), (806, 423040), (832, 409820), (992, 343720), (1040, 327856), (1240, 274976), (1280, 266383), (1322, 257920), (1612, 211520), (1664, 204910), (1984, 171860), (2015, 169216), (2080, 163928), (2480, 137488), (2644, 128960), (3224, 105760), (3305, 103168), (3328, 102455), (3968, 85930), (4030, 84608), (4160, 81964), (4960, 68744), (5288, 64480), (6448, 52880), (6610, 51584), (7936, 42965), (8060, 42304), (8320, 40982), (8593, 39680), (9920, 34372), (10576, 32240), (12896, 26440), (13220, 25792), (16120, 21152), (16640, 20491), (17186, 19840)]