18651780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:266

約数の個数: 144

約数和(自身を含む): 65729664

約数和(自身を除く): 47077884

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 113, 126, 131, 140, 180, 210, 226, 252, 262, 315, 339, 393, 420, 452, 524, 565, 630, 655, 678, 786, 791, 917, 1017, 1130, 1179, 1260, 1310, 1356, 1572, 1582, 1695, 1834, 1965, 2034, 2260, 2358, 2373, 2620, 2751, 3164, 3390, 3668, 3930, 3955, 4068, 4585, 4716, 4746, 5085, 5502, 5895, 6780, 7119, 7860, 7910, 8253, 9170, 9492, 10170, 11004, 11790, 11865, 13755, 14238, 14803, 15820, 16506, 18340, 20340, 23580, 23730, 27510, 28476, 29606, 33012, 35595, 41265, 44409, 47460, 55020, 59212, 71190, 74015, 82530, 88818, 103621, 133227, 142380, 148030, 165060, 177636, 207242, 222045, 266454, 296060, 310863, 414484, 444090, 518105, 532908, 621726, 666135, 888180, 932589, 1036210, 1243452, 1332270, 1554315, 1865178, 2072420, 2664540, 3108630, 3730356, 4662945, 6217260, 9325890, 18651780]

約数ペア:

[(1, 18651780), (2, 9325890), (3, 6217260), (4, 4662945), (5, 3730356), (6, 3108630), (7, 2664540), (9, 2072420), (10, 1865178), (12, 1554315), (14, 1332270), (15, 1243452), (18, 1036210), (20, 932589), (21, 888180), (28, 666135), (30, 621726), (35, 532908), (36, 518105), (42, 444090), (45, 414484), (60, 310863), (63, 296060), (70, 266454), (84, 222045), (90, 207242), (105, 177636), (113, 165060), (126, 148030), (131, 142380), (140, 133227), (180, 103621), (210, 88818), (226, 82530), (252, 74015), (262, 71190), (315, 59212), (339, 55020), (393, 47460), (420, 44409), (452, 41265), (524, 35595), (565, 33012), (630, 29606), (655, 28476), (678, 27510), (786, 23730), (791, 23580), (917, 20340), (1017, 18340), (1130, 16506), (1179, 15820), (1260, 14803), (1310, 14238), (1356, 13755), (1572, 11865), (1582, 11790), (1695, 11004), (1834, 10170), (1965, 9492), (2034, 9170), (2260, 8253), (2358, 7910), (2373, 7860), (2620, 7119), (2751, 6780), (3164, 5895), (3390, 5502), (3668, 5085), (3930, 4746), (3955, 4716), (4068, 4585)]