18931900520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^3\times {\mathrm{367}}^1\times {\mathrm{587}}^1$

素因数の和:1004

約数の個数: 128

約数和(自身を含む): 46349452800

約数和(自身を除く): 27417552280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 367, 520, 587, 676, 734, 845, 1174, 1352, 1468, 1690, 1835, 2197, 2348, 2935, 2936, 3380, 3670, 4394, 4696, 4771, 5870, 6760, 7340, 7631, 8788, 9542, 10985, 11740, 14680, 15262, 17576, 19084, 21970, 23480, 23855, 30524, 38155, 38168, 43940, 47710, 61048, 62023, 76310, 87880, 95420, 99203, 124046, 152620, 190840, 198406, 215429, 248092, 305240, 310115, 396812, 430858, 496015, 496184, 620230, 793624, 806299, 861716, 992030, 1077145, 1240460, 1289639, 1612598, 1723432, 1984060, 2154290, 2480920, 2579278, 2800577, 3225196, 3968120, 4031495, 4308580, 5158556, 5601154, 6448195, 6450392, 8062990, 8617160, 10317112, 11202308, 12896390, 14002885, 16125980, 22404616, 25792780, 28005770, 32251960, 36407501, 51585560, 56011540, 72815002, 112023080, 145630004, 182037505, 291260008, 364075010, 473297513, 728150020, 946595026, 1456300040, 1893190052, 2366487565, 3786380104, 4732975130, 9465950260, 18931900520]

約数ペア:

[(1, 18931900520), (2, 9465950260), (4, 4732975130), (5, 3786380104), (8, 2366487565), (10, 1893190052), (13, 1456300040), (20, 946595026), (26, 728150020), (40, 473297513), (52, 364075010), (65, 291260008), (104, 182037505), (130, 145630004), (169, 112023080), (260, 72815002), (338, 56011540), (367, 51585560), (520, 36407501), (587, 32251960), (676, 28005770), (734, 25792780), (845, 22404616), (1174, 16125980), (1352, 14002885), (1468, 12896390), (1690, 11202308), (1835, 10317112), (2197, 8617160), (2348, 8062990), (2935, 6450392), (2936, 6448195), (3380, 5601154), (3670, 5158556), (4394, 4308580), (4696, 4031495), (4771, 3968120), (5870, 3225196), (6760, 2800577), (7340, 2579278), (7631, 2480920), (8788, 2154290), (9542, 1984060), (10985, 1723432), (11740, 1612598), (14680, 1289639), (15262, 1240460), (17576, 1077145), (19084, 992030), (21970, 861716), (23480, 806299), (23855, 793624), (30524, 620230), (38155, 496184), (38168, 496015), (43940, 430858), (47710, 396812), (61048, 310115), (62023, 305240), (76310, 248092), (87880, 215429), (95420, 198406), (99203, 190840), (124046, 152620)]