1961187980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{563}}^1$

素因数の和:783

約数の個数: 96

約数和(自身を含む): 4434393600

約数和(自身を除く): 2473205620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 103, 178, 190, 206, 356, 380, 412, 445, 515, 563, 890, 1030, 1126, 1691, 1780, 1957, 2060, 2252, 2815, 3382, 3914, 5630, 6764, 7828, 8455, 9167, 9785, 10697, 11260, 16910, 18334, 19570, 21394, 33820, 36668, 39140, 42788, 45835, 50107, 53485, 57989, 91670, 100214, 106970, 115978, 174173, 183340, 200428, 213940, 231956, 250535, 289945, 348346, 501070, 579890, 696692, 870865, 952033, 1002140, 1101791, 1159780, 1741730, 1904066, 2203582, 3483460, 3808132, 4407164, 4760165, 5161021, 5508955, 9520330, 10322042, 11017910, 19040660, 20644084, 22035820, 25805105, 51610210, 98059399, 103220420, 196118798, 392237596, 490296995, 980593990, 1961187980]

約数ペア:

[(1, 1961187980), (2, 980593990), (4, 490296995), (5, 392237596), (10, 196118798), (19, 103220420), (20, 98059399), (38, 51610210), (76, 25805105), (89, 22035820), (95, 20644084), (103, 19040660), (178, 11017910), (190, 10322042), (206, 9520330), (356, 5508955), (380, 5161021), (412, 4760165), (445, 4407164), (515, 3808132), (563, 3483460), (890, 2203582), (1030, 1904066), (1126, 1741730), (1691, 1159780), (1780, 1101791), (1957, 1002140), (2060, 952033), (2252, 870865), (2815, 696692), (3382, 579890), (3914, 501070), (5630, 348346), (6764, 289945), (7828, 250535), (8455, 231956), (9167, 213940), (9785, 200428), (10697, 183340), (11260, 174173), (16910, 115978), (18334, 106970), (19570, 100214), (21394, 91670), (33820, 57989), (36668, 53485), (39140, 50107), (42788, 45835)]