19985160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{557}}^1$

素因数の和:607

約数の個数: 128

約数和(自身を含む): 67495680

約数和(自身を除く): 47510520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 23, 24, 26, 30, 39, 40, 46, 52, 60, 65, 69, 78, 92, 104, 115, 120, 130, 138, 156, 184, 195, 230, 260, 276, 299, 312, 345, 390, 460, 520, 552, 557, 598, 690, 780, 897, 920, 1114, 1196, 1380, 1495, 1560, 1671, 1794, 2228, 2392, 2760, 2785, 2990, 3342, 3588, 4456, 4485, 5570, 5980, 6684, 7176, 7241, 8355, 8970, 11140, 11960, 12811, 13368, 14482, 16710, 17940, 21723, 22280, 25622, 28964, 33420, 35880, 36205, 38433, 43446, 51244, 57928, 64055, 66840, 72410, 76866, 86892, 102488, 108615, 128110, 144820, 153732, 166543, 173784, 192165, 217230, 256220, 289640, 307464, 333086, 384330, 434460, 499629, 512440, 666172, 768660, 832715, 868920, 999258, 1332344, 1537320, 1665430, 1998516, 2498145, 3330860, 3997032, 4996290, 6661720, 9992580, 19985160]

約数ペア:

[(1, 19985160), (2, 9992580), (3, 6661720), (4, 4996290), (5, 3997032), (6, 3330860), (8, 2498145), (10, 1998516), (12, 1665430), (13, 1537320), (15, 1332344), (20, 999258), (23, 868920), (24, 832715), (26, 768660), (30, 666172), (39, 512440), (40, 499629), (46, 434460), (52, 384330), (60, 333086), (65, 307464), (69, 289640), (78, 256220), (92, 217230), (104, 192165), (115, 173784), (120, 166543), (130, 153732), (138, 144820), (156, 128110), (184, 108615), (195, 102488), (230, 86892), (260, 76866), (276, 72410), (299, 66840), (312, 64055), (345, 57928), (390, 51244), (460, 43446), (520, 38433), (552, 36205), (557, 35880), (598, 33420), (690, 28964), (780, 25622), (897, 22280), (920, 21723), (1114, 17940), (1196, 16710), (1380, 14482), (1495, 13368), (1560, 12811), (1671, 11960), (1794, 11140), (2228, 8970), (2392, 8355), (2760, 7241), (2785, 7176), (2990, 6684), (3342, 5980), (3588, 5570), (4456, 4485)]