20002259840

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{8713}}^1$

素因数の和:8960

約数の個数: 128

約数和(自身を含む): 50876514720

約数和(自身を除く): 30874254880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 211, 272, 320, 340, 422, 544, 640, 680, 844, 1055, 1088, 1360, 1688, 2110, 2176, 2720, 3376, 3587, 4220, 5440, 6752, 7174, 8440, 8713, 10880, 13504, 14348, 16880, 17426, 17935, 27008, 28696, 33760, 34852, 35870, 43565, 57392, 67520, 69704, 71740, 87130, 114784, 135040, 139408, 143480, 148121, 174260, 229568, 278816, 286960, 296242, 348520, 459136, 557632, 573920, 592484, 697040, 740605, 1115264, 1147840, 1184968, 1394080, 1481210, 1838443, 2295680, 2369936, 2788160, 2962420, 3676886, 4739872, 5576320, 5924840, 7353772, 9192215, 9479744, 11849680, 14707544, 18384430, 18959488, 23699360, 29415088, 31253531, 36768860, 47398720, 58830176, 62507062, 73537720, 94797440, 117660352, 125014124, 147075440, 156267655, 235320704, 250028248, 294150880, 312535310, 500056496, 588301760, 625070620, 1000112992, 1176603520, 1250141240, 2000225984, 2500282480, 4000451968, 5000564960, 10001129920, 20002259840]

約数ペア:

[(1, 20002259840), (2, 10001129920), (4, 5000564960), (5, 4000451968), (8, 2500282480), (10, 2000225984), (16, 1250141240), (17, 1176603520), (20, 1000112992), (32, 625070620), (34, 588301760), (40, 500056496), (64, 312535310), (68, 294150880), (80, 250028248), (85, 235320704), (128, 156267655), (136, 147075440), (160, 125014124), (170, 117660352), (211, 94797440), (272, 73537720), (320, 62507062), (340, 58830176), (422, 47398720), (544, 36768860), (640, 31253531), (680, 29415088), (844, 23699360), (1055, 18959488), (1088, 18384430), (1360, 14707544), (1688, 11849680), (2110, 9479744), (2176, 9192215), (2720, 7353772), (3376, 5924840), (3587, 5576320), (4220, 4739872), (5440, 3676886), (6752, 2962420), (7174, 2788160), (8440, 2369936), (8713, 2295680), (10880, 1838443), (13504, 1481210), (14348, 1394080), (16880, 1184968), (17426, 1147840), (17935, 1115264), (27008, 740605), (28696, 697040), (33760, 592484), (34852, 573920), (35870, 557632), (43565, 459136), (57392, 348520), (67520, 296242), (69704, 286960), (71740, 278816), (87130, 229568), (114784, 174260), (135040, 148121), (139408, 143480)]