239930080

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^2$

素因数の和:181

約数の個数: 144

約数和(自身を含む): 640628352

約数和(自身を除く): 400698272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 61, 62, 65, 80, 104, 122, 124, 130, 155, 160, 208, 244, 248, 260, 305, 310, 403, 416, 488, 496, 520, 610, 620, 793, 806, 976, 992, 1040, 1220, 1240, 1586, 1612, 1891, 1952, 2015, 2080, 2440, 2480, 3172, 3224, 3721, 3782, 3965, 4030, 4880, 4960, 6344, 6448, 7442, 7564, 7930, 8060, 9455, 9760, 12688, 12896, 14884, 15128, 15860, 16120, 18605, 18910, 24583, 25376, 29768, 30256, 31720, 32240, 37210, 37820, 48373, 49166, 59536, 60512, 63440, 64480, 74420, 75640, 96746, 98332, 115351, 119072, 122915, 126880, 148840, 151280, 193492, 196664, 230702, 241865, 245830, 297680, 302560, 386984, 393328, 461404, 483730, 491660, 576755, 595360, 773968, 786656, 922808, 967460, 983320, 1153510, 1499563, 1547936, 1845616, 1934920, 1966640, 2307020, 2999126, 3691232, 3869840, 3933280, 4614040, 5998252, 7497815, 7739680, 9228080, 11996504, 14995630, 18456160, 23993008, 29991260, 47986016, 59982520, 119965040, 239930080]

約数ペア:

[(1, 239930080), (2, 119965040), (4, 59982520), (5, 47986016), (8, 29991260), (10, 23993008), (13, 18456160), (16, 14995630), (20, 11996504), (26, 9228080), (31, 7739680), (32, 7497815), (40, 5998252), (52, 4614040), (61, 3933280), (62, 3869840), (65, 3691232), (80, 2999126), (104, 2307020), (122, 1966640), (124, 1934920), (130, 1845616), (155, 1547936), (160, 1499563), (208, 1153510), (244, 983320), (248, 967460), (260, 922808), (305, 786656), (310, 773968), (403, 595360), (416, 576755), (488, 491660), (496, 483730), (520, 461404), (610, 393328), (620, 386984), (793, 302560), (806, 297680), (976, 245830), (992, 241865), (1040, 230702), (1220, 196664), (1240, 193492), (1586, 151280), (1612, 148840), (1891, 126880), (1952, 122915), (2015, 119072), (2080, 115351), (2440, 98332), (2480, 96746), (3172, 75640), (3224, 74420), (3721, 64480), (3782, 63440), (3965, 60512), (4030, 59536), (4880, 49166), (4960, 48373), (6344, 37820), (6448, 37210), (7442, 32240), (7564, 31720), (7930, 30256), (8060, 29768), (9455, 25376), (9760, 24583), (12688, 18910), (12896, 18605), (14884, 16120), (15128, 15860)]