640970295040

素因数分解:

$2^8\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2541919}}^1$

素因数の和:2542137

約数の個数: 72

約数和(自身を含む): 1543118290560

約数和(自身を除く): 902147995520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 256, 320, 394, 640, 788, 985, 1280, 1576, 1970, 3152, 3940, 6304, 7880, 12608, 15760, 25216, 31520, 50432, 63040, 126080, 252160, 2541919, 5083838, 10167676, 12709595, 20335352, 25419190, 40670704, 50838380, 81341408, 101676760, 162682816, 203353520, 325365632, 406707040, 500758043, 650731264, 813414080, 1001516086, 1626828160, 2003032172, 2503790215, 3253656320, 4006064344, 5007580430, 8012128688, 10015160860, 16024257376, 20030321720, 32048514752, 40060643440, 64097029504, 80121286880, 128194059008, 160242573760, 320485147520, 640970295040]

約数ペア:

[(1, 640970295040), (2, 320485147520), (4, 160242573760), (5, 128194059008), (8, 80121286880), (10, 64097029504), (16, 40060643440), (20, 32048514752), (32, 20030321720), (40, 16024257376), (64, 10015160860), (80, 8012128688), (128, 5007580430), (160, 4006064344), (197, 3253656320), (256, 2503790215), (320, 2003032172), (394, 1626828160), (640, 1001516086), (788, 813414080), (985, 650731264), (1280, 500758043), (1576, 406707040), (1970, 325365632), (3152, 203353520), (3940, 162682816), (6304, 101676760), (7880, 81341408), (12608, 50838380), (15760, 40670704), (25216, 25419190), (31520, 20335352), (50432, 12709595), (63040, 10167676), (126080, 5083838), (252160, 2541919)]