31025820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 103305888

約数和(自身を除く): 72280068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 61, 70, 84, 98, 105, 122, 140, 147, 173, 183, 196, 210, 244, 245, 294, 305, 346, 366, 420, 427, 490, 519, 588, 610, 692, 732, 735, 854, 865, 915, 980, 1038, 1211, 1220, 1281, 1470, 1708, 1730, 1830, 2076, 2135, 2422, 2562, 2595, 2940, 2989, 3460, 3633, 3660, 4270, 4844, 5124, 5190, 5978, 6055, 6405, 7266, 8477, 8540, 8967, 10380, 10553, 11956, 12110, 12810, 14532, 14945, 16954, 17934, 18165, 21106, 24220, 25431, 25620, 29890, 31659, 33908, 35868, 36330, 42212, 42385, 44835, 50862, 52765, 59780, 63318, 72660, 73871, 84770, 89670, 101724, 105530, 126636, 127155, 147742, 158295, 169540, 179340, 211060, 221613, 254310, 295484, 316590, 369355, 443226, 508620, 517097, 633180, 738710, 886452, 1034194, 1108065, 1477420, 1551291, 2068388, 2216130, 2585485, 3102582, 4432260, 5170970, 6205164, 7756455, 10341940, 15512910, 31025820]

約数ペア:

[(1, 31025820), (2, 15512910), (3, 10341940), (4, 7756455), (5, 6205164), (6, 5170970), (7, 4432260), (10, 3102582), (12, 2585485), (14, 2216130), (15, 2068388), (20, 1551291), (21, 1477420), (28, 1108065), (30, 1034194), (35, 886452), (42, 738710), (49, 633180), (60, 517097), (61, 508620), (70, 443226), (84, 369355), (98, 316590), (105, 295484), (122, 254310), (140, 221613), (147, 211060), (173, 179340), (183, 169540), (196, 158295), (210, 147742), (244, 127155), (245, 126636), (294, 105530), (305, 101724), (346, 89670), (366, 84770), (420, 73871), (427, 72660), (490, 63318), (519, 59780), (588, 52765), (610, 50862), (692, 44835), (732, 42385), (735, 42212), (854, 36330), (865, 35868), (915, 33908), (980, 31659), (1038, 29890), (1211, 25620), (1220, 25431), (1281, 24220), (1470, 21106), (1708, 18165), (1730, 17934), (1830, 16954), (2076, 14945), (2135, 14532), (2422, 12810), (2562, 12110), (2595, 11956), (2940, 10553), (2989, 10380), (3460, 8967), (3633, 8540), (3660, 8477), (4270, 7266), (4844, 6405), (5124, 6055), (5190, 5978)]