18505440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:273

約数の個数: 144

約数和(自身を含む): 64393056

約数和(自身を除く): 45887616

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 71, 72, 80, 90, 96, 120, 142, 144, 160, 180, 181, 213, 240, 284, 288, 355, 360, 362, 426, 480, 543, 568, 639, 710, 720, 724, 852, 905, 1065, 1086, 1136, 1278, 1420, 1440, 1448, 1629, 1704, 1810, 2130, 2172, 2272, 2556, 2715, 2840, 2896, 3195, 3258, 3408, 3620, 4260, 4344, 5112, 5430, 5680, 5792, 6390, 6516, 6816, 7240, 8145, 8520, 8688, 10224, 10860, 11360, 12780, 12851, 13032, 14480, 16290, 17040, 17376, 20448, 21720, 25560, 25702, 26064, 28960, 32580, 34080, 38553, 43440, 51120, 51404, 52128, 64255, 65160, 77106, 86880, 102240, 102808, 115659, 128510, 130320, 154212, 192765, 205616, 231318, 257020, 260640, 308424, 385530, 411232, 462636, 514040, 578295, 616848, 771060, 925272, 1028080, 1156590, 1233696, 1542120, 1850544, 2056160, 2313180, 3084240, 3701088, 4626360, 6168480, 9252720, 18505440]

約数ペア:

[(1, 18505440), (2, 9252720), (3, 6168480), (4, 4626360), (5, 3701088), (6, 3084240), (8, 2313180), (9, 2056160), (10, 1850544), (12, 1542120), (15, 1233696), (16, 1156590), (18, 1028080), (20, 925272), (24, 771060), (30, 616848), (32, 578295), (36, 514040), (40, 462636), (45, 411232), (48, 385530), (60, 308424), (71, 260640), (72, 257020), (80, 231318), (90, 205616), (96, 192765), (120, 154212), (142, 130320), (144, 128510), (160, 115659), (180, 102808), (181, 102240), (213, 86880), (240, 77106), (284, 65160), (288, 64255), (355, 52128), (360, 51404), (362, 51120), (426, 43440), (480, 38553), (543, 34080), (568, 32580), (639, 28960), (710, 26064), (720, 25702), (724, 25560), (852, 21720), (905, 20448), (1065, 17376), (1086, 17040), (1136, 16290), (1278, 14480), (1420, 13032), (1440, 12851), (1448, 12780), (1629, 11360), (1704, 10860), (1810, 10224), (2130, 8688), (2172, 8520), (2272, 8145), (2556, 7240), (2715, 6816), (2840, 6516), (2896, 6390), (3195, 5792), (3258, 5680), (3408, 5430), (3620, 5112), (4260, 4344)]